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Wikipedia

Zoo

For other uses, see Zoo (disambiguation).

A zoo (short for zoological garden; also called an animal park or menagerie) is a facility in which animals are housed within enclosures, cared for, displayed to the public, and in some cases bred for conservation purposes.

Map of zoos and mini zoos all over the world(interactive map)

The term zoological garden refers to zoology, the study of animals. The term is derived from the Greekζώον, zoon, 'animal', and the suffix-λογία, -logia, 'study of'. The abbreviation zoo was first used of the London Zoological Gardens, which was opened for scientific study in 1828 and to the public in 1847. In the United States alone, zoos are visited by over 181 million people annually.

Contents

A Siberian tiger (Panthera tigris altaica) at Korkeasaari Zoo in Helsinki, Finland

The London Zoo, which was opened in 1828, was initially known as the "Gardens and Menagerie of the Zoological Society of London", and it described itself as a menagerie or "zoological forest". The abbreviation "zoo" first appeared in print in the United Kingdom around 1847, when it was used for the Clifton Zoo, but it was not until some 20 years later that the shortened form became popular in the song "Walking in the Zoo" by music-hall artist Alfred Vance. The term "zoological park" was used for more expansive facilities in Halifax, Nova Scotia, Washington, D.C., and the Bronx in New York, which opened in 1847, 1891 and 1899 respectively.

Relatively new terms for zoos in the late 20th century are "conservation park" or "bio park". Adopting a new name is a strategy used by some zoo professionals to distance their institutions from the stereotypical and nowadays criticized zoo concept of the 19th century. The term "bio park" was first coined and developed by the National Zoo in Washington D.C. in the late 1980s. In 1993, the New York Zoological Society changed its name to the Wildlife Conservation Society and re branded the zoos under its jurisdiction as "wildlife conservation parks".

Royal menageries

Further information: Menagerie
The Tower of London housed England's royal menagerie for several centuries (Picture from the 15th century, British Library).

The predecessor of the zoological garden is the menagerie, which has a long history from the ancient world to modern times. The oldest known zoological collection was revealed during excavations at Hierakonpolis, Egypt in 2009, of a ca. 3500 BCE menagerie. The exotic animals included hippopotami, hartebeest, elephants, baboons and wildcats. King Ashur-bel-kala of the Middle Assyrian Empire created zoological and botanical gardens in the 11th century BCE. In the 2nd century BCE, the Chinese Empress Tanki had a "house of deer" built, and King Wen of Zhou kept a 1,500-acre (6.1 km2) zoo called Ling-Yu, or the Garden of Intelligence. Other well-known collectors of animals included King Solomon of the Kingdom of Israel and Judah, queen Semiramis and King Ashurbanipal of Assyria, and King Nebuchadnezzar of Babylonia. By the 4th century BCE, zoos existed in most of the Greek city states; Alexander the Great is known to have sent animals that he found on his military expeditions back to Greece. The Roman emperors kept private collections of animals for study or for use in the arena, the latter faring notoriously poorly. The 19th-century historian W. E. H. Lecky wrote of the Roman games, first held in 366 BCE:

At one time, bear and a bull, chained together, rolled in fierce combat across the sand ... Four hundred bears were killed in a single day under Caligula ... Under Nero, four hundred tigers fought with bulls and elephants. In a single day, at the dedication of the Colosseum by Titus, five thousand animals perished. Under Trajan ... lions, tigers, elephants, rhinoceroses, hippopotami, giraffes, bulls, stags, even crocodiles and serpents were employed to give novelty to the spectacle.

Charlemagne had an elephant named Abul-Abbas that was given to him by the Abbasid Caliph. Henry I of England kept a collection of animals at his palace in Woodstock which reportedly included lions, leopards, and camels. The most prominent collection in medieval England was in the Tower of London, created as early as 1204 by King John I.

Henry III received a wedding gift in 1235 of three leopards from Frederick II, Holy Roman Emperor, and in 1264, the animals were moved to the Bulwark, renamed the Lion Tower, near the main western entrance of the Tower. It was opened to the public during the reign of Elizabeth I in the 16th century. During the 18th century, the price of admission was three half-pence, or the supply of a cat or dog for feeding to the lions. The animals were moved to the London Zoo when it opened.

Aztec emperor Moctezuma had in his capital city of Tenochtitlan a "house of animals" with a large collection of birds, mammals and reptiles in a garden tended by more than 600 employees. The garden was described by several Spanish conquerors, including Hernán Cortés in 1520. After the Aztec revolt against the Spanish rule, and during the subsequent battle for the city, Cortés reluctantly ordered the zoo to be destroyed.

Enlightenment Era

The Versailles menagerie during the reign of Louis XIV in the 17th century
Further information: List of zoos

The oldest zoo in the world still in existence is the Tiergarten Schönbrunn in Vienna, Austria. It was constructed by Adrian van Stekhoven in 1752 at the order of Emperor Francis I, to serve as an imperial menagerie as part of Schönbrunn Palace. The menagerie was initially reserved for the viewing pleasure of the imperial family and the court, but was made accessible to the public in 1765. In 1775, a zoo was founded in Madrid, and in 1795, the zoo inside the Jardin des Plantes in Paris was founded by Jacques-Henri Bernardin, with animals from the royal menagerie at Versailles, primarily for scientific research and education. The planning about a space for the conservation and observation of animals was expressed in connection with the political construction of republican citizenship.

The Kazan Zoo, the first zoo in Russia was founded in 1806 by the Professor of Kazan State University Karl Fuchs.

The modern zoo

Until the early 19th century, the function of the zoo was often to symbolize royal power, like King Louis XIV's menagerie at Versailles. Major cities in Europe set up zoos in the 19th century, usually using London and Paris as models. The transition was made from princely menageries designed to entertain high society with strange novelties into public zoological gardens. The new goal was to educate the entire population with information along modern scientific lines. Zoos were supported by local commercial or scientific societies.

British Empire

The modern zoo that emerged in the 19th century in the United Kingdom, was focused on providing scientific study and later educational exhibits to the public for entertainment and inspiration.

A growing fascination for natural history and zoology, coupled with the tremendous expansion in the urbanization of London, led to a heightened demand for a greater variety of public forms of entertainment to be made available. The need for public entertainment, as well as the requirements of scholarly research, came together in the founding of the first modern zoos. Whipsnade Park Zoo in Bedfordshire, England, opened in 1931. It allowed visitors to drive through the enclosures and come into close proximity with the animals.

The Zoological Society of London was founded in 1826 by Stamford Raffles and established the London Zoo in Regent's Park two years later in 1828. At its founding, it was the world's first scientific zoo. Originally intended to be used as a collection for scientific study, it was opened to the public in 1847. The Zoo was located in Regent's Park - then undergoing development at the hands of the architect John Nash. What set the London zoo apart from its predecessors was its focus on society at large. The zoo was established in the middle of a city for the public, and its layout was designed to cater for the large London population. The London zoo was widely copied as the archetype of the public city zoo. In 1853, the Zoo opened the world's first public aquarium.

Dublin Zoo was opened in 1831 by members of the medical profession interested in studying animals while they were alive and more particularly getting hold of them when they were dead.

Downs' Zoological Gardens created by Andrew Downs and opened to the Nova Scotia public in 1847. It was originally intended to be used as a collection for scientific study. By the early 1860s, the zoo grounds covered 40 hectares with many fine flowers and ornamental trees, picnic areas, statues, walking paths, The Glass House (which contained a greenhouse with an aviary, aquarium, and museum of stuffed animals and birds), a pond, a bridge over a waterfall, an artificial lake with a fountain, a wood-ornamented greenhouse, a forest area, and enclosures and buildings.

The first zoological garden in Australia was Melbourne Zoo in 1860.

Germany

"Wild" horses in the Erlebnispark Tripsdrill wildlife and theme park near Cleebronn in Southern Germany

In German states leading roles came Berlin (1841), Frankfurt (1856), and Hamburg (1863). In 1907, the entrepreneur Carl Hagenbeck founded the Tierpark Hagenbeck in Stellingen, now a quarter of Hamburg. His zoo was a radical departure from the layout of the zoo that had been established in 1828. It was the first zoo to use open enclosures surrounded by moats, rather than barred cages, to better approximate animals' natural environments. He also set up mixed-species exhibits and based the layout on the different organizing principle of geography, as opposed to taxonomy.

Poland

The largest tank of the Afrykarium in the Wrocław Zoo shows the depths of the Mozambique Channel, where sharks, rays, and other large pelagic fish can be viewed from this 18 meter long underwater acrylic tunnel

The Wrocław Zoo (Polish: Ogród Zoologiczny we Wrocławiu) is the oldest zoo in Poland, opened in 1865 when the city was part of Prussia, and was home to about 10,500 animals representing about 1,132 species (in terms of the number of animal species it is the third largest in the world). In 2014 the Wrocław Zoo opened the Africarium, the only themed oceanarium devoted solely to exhibiting the fauna of Africa, comprehensively presenting selected ecosystems from the continent of Africa. Housing over 10 thousand animals, the facility's breadth extends from housing insects such cockroaches to the large mammals like the elephants on an area of over 33 hectares.

United States

In the United States, the Philadelphia Zoo, opened July 1, 1874, earning its motto "America's First Zoo." The Lincoln Park Zoological Gardens in Chicago and the Cincinnati Zoo opened in 1875. In the 1930s, federal relief programs provided financial aid to most local zoos. The Works Progress Administration and similar New Deal government agencies helped greatly in the construction, renovation, and expansion of zoos when the Great Depression severely reduced local budgets. It was "a new deal for animals."

The Atlanta zoo, founded in 1886, suffered neglect. By 1984 it was ranked among the ten worst zoos in the U.S. Systematic reform by 2000 put it on the list of the ten best.

By 2020, the United States featured 230 accredited zoos and aquariums across 45 states, accommodating 800,000 animals, and 6,000 species out of which about 1,000 are endangered. The zoos provide 208,000 jobs, and with an annual budget of $230 million for wildlife conservation. They attract over 200 million visits a year and have special programs for schools. They are organized by the Association of Zoos and Aquariums.

Japan

Japan's first modern zoo, Tokyo's Ueno Imperial Zoological Gardens, opened in 1882 based on European models. In World War II it was used to teach the Japanese people about the lands recently conquered by the Army. In 1943, fearing American bombing attacks, the government ordered the zoo to destroy dangerous animals that might escape.

Environmentalism

When ecology emerged as a matter of public interest in the 1970s, a few zoos began to consider making conservation their central role, with Gerald Durrell of the Jersey Zoo, George Rabb of Brookfield Zoo, and William Conway of the Bronx Zoo (Wildlife Conservation Society) leading the discussion. From then on, zoo professionals became increasingly aware of the need to engage themselves in conservation programs, and the American Zoo Association soon said that conservation was its highest priority. In order to stress conservation issues, many large zoos stopped the practice of having animals perform tricks for visitors. The Detroit Zoo, for example, stopped its elephant show in 1969, and its chimpanzee show in 1983, acknowledging that the trainers had probably abused the animals to get them to perform.

Mass destruction of wildlife habitat has yet to cease all over the world and many species such as elephants, big cats, penguins, tropical birds, primates, rhinos, exotic reptiles, and many others are in danger of dying out. Many of today's zoos hope to stop or slow the decline of many endangered species and see their primary purpose as breeding endangered species in captivity and reintroducing them into the wild. Modern zoos also aim to help teach visitors the importance on animal conservation, often through letting visitors witness the animals firsthand. Some critics and the majority of animal rights activists say that zoos, no matter what their intentions are, or how noble they are, are immoral and serve as nothing but to fulfill human leisure at the expense of the animals (which is an opinion that has spread over the years). However, zoo advocates argue that their efforts make a difference in wildlife conservation and education.

Human exhibits

Ota Benga, who was featured as a human exhibit in New York, 1906
Further information: Human zoo, Scientific racism, and Social Darwinism

Human beings were sometimes displayed in cages along with non-human animals, to illustrate the differences between people of European and non-European origin. In September 1906, William Hornaday, director of the Bronx Zoo in New York—with the agreement of Madison Grant, head of the New York Zoological Society—had Ota Benga, a Congolese pygmy, displayed in a cage with the chimpanzees, then with an orangutan named Dohong, and a parrot. The exhibit was intended as an example of the "missing link" between the orangutan and white man. It triggered protests from the city's clergymen, but the public reportedly flocked to see Benga.

Human beings were also displayed in cages during the 1931 Paris Colonial Exposition, and as late as 1958 in a "Congolese village" display at Expo '58 in Brussels.

Further information: List of zoos and Immersion exhibit
Monkey islands, São Paulo Zoo

Zoo animals live in enclosures that often attempt to replicate their natural habitats or behavioral patterns, for the benefit of both the animals and visitors. Nocturnal animals are often housed in buildings with a reversed light-dark cycle, i.e. only dim white or red lights are on during the day so the animals are active during visitor hours, and brighter lights on at night when the animals sleep. Special climate conditions may be created for animals living in extreme environments, such as penguins. Special enclosures for birds, mammals, insects, reptiles, fish, and other aquatic life forms have also been developed. Some zoos have walk-through exhibits where visitors enter enclosures of non-aggressive species, such as lemurs, marmosets, birds, lizards, and turtles. Visitors are asked to keep to paths and avoid showing or eating foods that the animals might snatch.

Safari park

Main article: Safari park

Some zoos keep animals in larger, outdoor enclosures, confining them with moats and fences, rather than in cages. Safari parks, also known as zoo parks and lion farms, allow visitors to drive through them and come in close proximity to the animals. Sometimes, visitors are able to feed animals through the car windows. The first safari park was Whipsnade Park in Bedfordshire, England, opened by the Zoological Society of London in 1931 which today (2014) covers 600 acres (2.4 km2). Since the early 1970s, an 1,800 acre (7 km2) park in the San Pasqual Valley near San Diego has featured the San Diego Zoo Safari Park, run by the Zoological Society of San Diego. One of two state-supported zoo parks in North Carolina is the 2,000-acre (8.1 km2) North Carolina Zoo in Asheboro. The 500-acre (2.0 km2) Werribee Open Range Zoo in Melbourne, Australia, displays animals living in an artificial savannah.

Aquaria

Further information: Public aquarium
Sea lions at the Melbourne Zoo

The first public aquarium was opened at the London Zoo in 1853. This was followed by the opening of public aquaria in continental Europe (e.g. Paris in 1859, Hamburg in 1864, Berlin in 1869, and Brighton in 1872) and the United States (e.g. Boston in 1859, Washington in 1873, San Francisco Woodward's Garden in 1873, and the New York Aquarium at Battery Park in 1896).

Roadside zoos

Roadside zoos are found throughout North America, particularly in remote locations. They are often small, for-profit zoos, often intended to attract visitors to some other facility, such as a gas station. The animals may be trained to perform tricks, and visitors are able to get closer to them than in larger zoos. Since they are sometimes less regulated, roadside zoos are often subject to accusations of neglect and cruelty.

In June 2014 the Animal Legal Defense Fund filed a lawsuit against the Iowa-based roadside Cricket Hollow Zoo for violating the Endangered Species Act by failing to provide proper care for its animals. Since filing the lawsuit, ALDF has obtained records from investigations conducted by the USDA's Animal and Plant Health Inspection Services; these records show that the zoo is also violating the Animal Welfare Act.

Petting zoos

Main article: Petting zoo
Petting farm in Berlin Zoological Garden

A petting zoo, also called petting farms or children's zoos, features a combination of domestic animals and wild species that are docile enough to touch and feed. To ensure the animals' health, the food is supplied by the zoo, either from vending machines or a kiosk nearby.

Animal theme parks

Main article: Animal theme park

An animal theme park is a combination of an amusement park and a zoo, mainly for entertaining and commercial purposes. Marine mammal parks such as Sea World and Marineland are more elaborate dolphinariums keeping whales, and containing additional entertainment attractions. Another kind of animal theme park contains more entertainment and amusement elements than the classical zoo, such as stage shows, roller coasters, and mythical creatures. Some examples are Busch Gardens Tampa Bay in Tampa, Florida, both Disney's Animal Kingdom and Gatorland in Orlando, Florida, Flamingo Land in North Yorkshire, England, and Six Flags Discovery Kingdom in Vallejo, California.

Sources of animals

By the year 2000 most animals being displayed in zoos were the offspring of other zoo animals.[citation needed] This trend, however was and still is somewhat species-specific. When animals are transferred between zoos, they usually spend time in quarantine, and are given time to acclimatize to their new enclosures which are often designed to mimic their natural environment. For example, some species of penguins may require refrigerated enclosures. Guidelines on necessary care for such animals is published in the International Zoo Yearbook.

Dealing with space constraints and surplus animals

Especially in large animals, a limited number of spaces are available in zoos. As a consequence, various management tools are used to preserve the space for the genetically most important individuals and to reduce the risk of inbreeding. Management of animal populations is typically through international organizations such as AZA and EAZA. Zoos have several different ways of managing the animal populations, such as moves between zoos, contraception, sale of excess animals and euthanization (culling).

Contraception can be an effective way to limit a population's breeding. However it may also have health repercussions and can be difficult or even impossible to reverse in some animals. Additionally, some species may lose their reproductive capability entirely if prevented from breeding for a period (whether through contraceptives or isolation), but further study is needed on the subject. Sale of surplus animals from zoos was once common and in some cases animals have ended up in substandard facilities. In recent decades the practice of selling animals from certified zoos has declined. A large number of animals are culled each year in zoos, but this is controversial. A highly publicized culling as part of population management was that of a healthy giraffe at Copenhagen Zoo in 2014. The zoo argued that its genes already were well-represented in captivity, making the giraffe unsuitable for future breeding. There were offers to adopt it and an online petition to save it had many thousand signatories, but the culling proceeded. Although zoos in some countries have been open about culling, the controversy of the subject and pressure from the public has resulted in others being closed. This stands in contrast to most zoos publicly announcing animal births. Furthermore, while many zoos are willing to cull smaller and/or low-profile animals, fewer are willing to do it with larger high-profile species.

Conservation and research

The African plains exhibit at North Carolina Zoo illustrates the dimension of an open-range zoo.

The position of most modern zoos in Australasia, Asia, Europe, and North America, particularly those with scientific societies, is that they display wild animals primarily for the conservation of endangered species, as well as for research purposes and education, and secondarily for the entertainment of visitors,. The Zoological Society of London states in its charter that its aim is "the advancement of Zoology and Animal Physiology and the introduction of new and curious subjects of the Animal Kingdom." It maintains two research institutes, the Nuffield Institute of Comparative Medicine and the Wellcome Institute of Comparative Physiology. In the U.S., the Penrose Research Laboratory of the Philadelphia Zoo focuses on the study of comparative pathology. The World Association of Zoos and Aquariums produced its first conservation strategy in 1993, and in November 2004, it adopted a new strategy that sets out the aims and mission of zoological gardens of the 21st century. When studying behaviour of captive animals, several things should however be taken into account before drawing conclusions about wild populations. Including that captive populations are often smaller than wild ones and that the space available to each animal is often less than in the wild.

Conservation programs all over the world fight to protect species from going extinct, but many conservation programs are underfunded and under-represented. Conservation programs can struggle to fight bigger issues like habitat loss and illness. It often takes a lot of funding and long time periods to rebuild degraded habitats, both of which are scarce in conservation efforts. The current state of conservation programs cannot rely solely on situ (on-site conservation) plans alone, ex situ (off-site conservation) may therefore provide a suitable alternative. Off-site conservation relies on zoos, national parks, or other care facilities to support the rehabilitation of the animals and their populations. Zoos benefit conservation by providing suitable habitats and care to endangered animals. When properly regulated, they present a safe, clean environment for the animals to increase populations sizes. A study on amphibian conservation and zoos addressed these problems by writing,

Whilst addressing in situ threats, particularly habitat loss, degradation and fragmentation, is of primary importance; for many amphibian species in situ conservation alone will not be enough, especially in light of current un-mitigatable threats that can impact populations very rapidly such as chytridiomycosis [an infectious fungal disease]. Ex situ programmes can complement in situ activities in a number of ways including maintaining genetically and demographically viable populations while threats are either better understood or mitigated in the wild

The breeding of endangered species is coordinated by cooperative breeding programmes containing international studbooks and coordinators, who evaluate the roles of individual animals and institutions from a global or regional perspective, and there are regional programmes all over the world for the conservation of endangered species. In Africa, conservation is handled by the African Preservation Program (APP); in the U.S. and Canada by Species Survival Plans; in Australasia, by the Australasian Species Management Program; in Europe, by the European Endangered Species Program; and in Japan, South Asia, and South East Asia, by the Japanese Association of Zoos and Aquariums, the South Asian Zoo Association for Regional Cooperation, and the South East Asian Zoo Association.

Positive impacts on local wildlife

Besides conservation of captive species, large zoos may form a suitable environment for wild native animals such as herons to live in or visit. A colony of black-crowned night herons has regularly summered at the National Zoo in Washington, D.C. for more than a century. Some zoos may provide information to visitors on wild animals visiting or living in the zoo, or encourage them by directing them to specific feeding or breeding platforms.

In modern, well-regulated zoos, breeding is controlled to maintain a self-sustaining, global captive population. This is not the case in some less well-regulated zoos, often based in poorer regions. Overall "stock turnover" of animals during a year in a select group of poor zoos was reported as 20%-25% with 75% of wild caught apes dying in captivity within the first 20 months. The authors of the report stated that before successful breeding programs, the high mortality rate was the reason for the "massive scale of importations."

One 2-year study indicated that of 19,361 mammals that left accredited zoos in the U.S. between 1992 and 1998, 7,420 (38%) went to dealers, auctions, hunting ranches, unaccredited zoos and individuals, and game farms.

Further information: Captivity (animal) and Behavioral enrichment
Bear cages, one square meter in size, in Dalian zoo, Port Arthur, Liaoning Province, China, in 1997.

The welfare of zoo animals varies widely. Many zoos work to improve their animal enclosures and make it fit the animals' needs, but constraints such as size and expense can complicate this. The type of enclosure and the husbandry are of great importance in determining the welfare of animals. Substandard enclosures can lead to decreased lifespans, caused by factors as human diseases, unsafe materials in the cages and possible escape attempts (Bendow 382). However, when zoos take time to think about the animal's welfare, zoos can become a place of refuge. There are animals that are injured in the wild and are unable to survive on their own, but in the zoos they can live out the rest of their lives healthy and happy (McGaffin). In recent years, some zoos have chosen to move out some larger animals because they do not have the space available to provide an adequate enclosure for them (Lemonic, McDowell, and Bjerklie 50).

An issue with animal welfare in zoos is that best animal husbandry practices are often not completely known. Especially for species that are only kept in a small number of zoos. To solve this organizations like EAZA and AZA have begun to develop husbandry manuals.

Behavioural restriction

Many modern zoos attempt to improve animal welfare by providing more space and behavioural enrichments. This often involves housing the animals in naturalistic enclosures that allow the animals to express more of their natural behaviours, such as roaming and foraging. Whilst many zoos have been working hard on this change, in some zoos, some enclosures still remain barren concrete enclosures or other minimally enriched cages.

Sometimes animals are unable to perform certain behaviors in zoos, like seasonal migration or traveling over large distances. Whether these behaviors are necessary for good welfare however is unclear. Some behaviors are seen as essential for an animal's welfare whilst others aren't. It is however shown that even in limited spaces, certain natural behaviors can still be performed. A study in 2014 for example found that Asian elephants in zoos covered similar or higher walking distances then sedentary wild populations. Migration in the wild can also be related to food scarcity or other unfavorable environmental problems. However a proper zoo enclosure never runs out of food or water, and in case of unfavorable temperatures or weather animals are provided with (indoor) shelter.

Abnormal behaviour

Animals in zoos can exhibit behaviors that are abnormal in their frequency, intensity, or would not normally be part of their behavioural repertoire. Whilst these types of behaviors can be a sign of bad welfare and stress, this isn't necessarily the case. Other measurements or behavioral research is advised before determining whether an animal performing stereotypical behavior is living in bad welfare or not. Examples of stereotypical behaviors are pacing, head-bobbing, obsessive grooming and feather-plucking A study examining data collected over four decades found that polar bears, lions, tigers and cheetahs can display stereotypical behaviors in many older exhibits. However they also noted that in more modern naturalistic exhibits, these behaviors could completely disappear. Elephants have also been recorded displaying stereotypical behaviours in the form of swaying back and forth, trunk swaying or route tracing. This has been observed in 54% of individuals in UK zoos. However it has been shown that modern facilities and modern husbandry can greatly decrease or even entirely remove abnormal behaviors. A study of a group of elephants in Planckendael showed that the older wild-caught animals displayed many stereotypical behaviors. These elephants had spend part of their lives either in a circus or in other substandard enclosures. On the other hand, the elephants born in the modern facilities that had lived in a herd their whole life barely displayed any stereotypical behaviors at all. The life history of an animal is thus extremely important when analyzing the causes of stereotypical behavior, as this can be a historical relict instead of a result of present-day husbandry.

Longevity

The influence on a zoological environment on animal's longevity is not straightforward. A study of 50 mammal species found that 84% of them actually lived longer in zoos than they would in the wild on average. On the other hand, some research claims that elephants in Japanese zoos would live shorter than their wild counterparts at just 17 years. This has been refuted by other studies however. It is important to acknowledge here that studies might not yet fully represent recent improvements in husbandry. For example, studies show that captive-bred elephants already have a lower mortality risk then wild-caught ones.

Climate conditions

Climatic conditions can make it difficult to keep some animals in zoos in some locations. For example, Alaska Zoo had an elephant named Maggie. She was housed in a small, indoor enclosure because the outdoor temperature was too low.

Epidemiology

Tsetse flies have invaded zoos that have been established in the tsetse zone. More concerning, tsetse-borne species of trypanosomes have entered zoos outside the traditional tsetse zone in infected animals imported and added to their collections. Whether these can be controlled depends on several factors: Vale 1998 found that the technique used in placing attractants was important; and Green 1988, Torr 1994, Torr et al. 1995, and Torr et al. 1997 found the availability for specifically needed attractants for the specific job to also vary widely.

Some critics and many animal rights activists claim that zoo animals are treated as voyeuristic objects, rather than living creatures, and often suffer due to the transition from being free and wild to captivity. However, ever since imports of wild-caught animals became more regulated by organizations like CITES and national laws zoos have started sustaining their populations via breeding. This change started around the 1970s. Many cooperations in the form of breeding programs have been set up since, for both common and endangered species.

In some countries, feeding live vertebrates to zoo animals is illegal under most circumstances. The UK Animal Welfare Act of 2006, for example, states that prey must be killed for feeding, unless this threatens the health of the predator. Some zoos had already adopted such practices prior to the implementation of such policies. London zoo, for example, stopped feeding live vertebrates in the 20th century, long before the Animal Welfare Act was put in place in 2006. Despite being illegal in China, some zoos have been found to still feed live vertebrates to their predators. In some parks like Xiongsen Bear and Tiger Mountain Village, live chickens and other livestock were found to be thrown into the enclosures of tigers and other predators. In Guilin, in south-east China, live cows and pigs are thrown to tigers to amuse visitors. Other Chinese parks like Shenzhen Safari Park have already stopped this practice after facing heavy criticism.

WPA 1937 poster promoting visits to American zoos

United States

In the United States, any public animal exhibit must be licensed and inspected by the Department of Agriculture, the Environmental Protection Agency, and the Occupational Safety and Health Administration. Depending on the animals they exhibit, the activities of zoos are regulated by laws including the Endangered Species Act, the Animal Welfare Act, the Migratory Bird Treaty Act of 1918 and others.

Additionally, zoos in several countries may choose to pursue accreditation by the Association of Zoos and Aquariums (AZA), which originated in the U.S. To achieve accreditation, a zoo must pass an application and inspection process and meet or exceed the AZA's standards for animal health and welfare, fundraising, zoo staffing, and involvement in global conservation efforts. Inspection is performed by three experts (typically one veterinarian, one expert in animal care, and one expert in zoo management and operations) and then reviewed by a panel of twelve experts before accreditation is awarded. This accreditation process is repeated once every five years. The AZA estimates that there are approximately 2,400 animal exhibits operating under USDA license as of February 2007; fewer than 10% are accredited.

Europe

The European Union introduced a directive to strengthen the conservation role of zoos, making it a statutory requirement that they participate in conservation and education, and requiring all member states to set up systems for their licensing and inspection. Zoos are regulated in the UK by the Zoo Licensing Act of 1981, which came into effect in 1984. A zoo is defined as any "establishment where wild animals are kept for exhibition ... to which members of the public have access, with or without charge for admission, seven or more days in any period of twelve consecutive months", excluding circuses and pet shops. The Act requires that all zoos be inspected and licensed, and that animals kept in enclosures are provided with a suitable environment in which they can express most normal behavior.

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Zoo
Zoo Article Talk Language Watch Edit 160 160 Redirected from Zoological garden For other uses see Zoo disambiguation A zoo short for zoological garden also called an animal park or menagerie is a facility in which animals are housed within enclosures cared for displayed to the public and in some cases bred for conservation purposes Map of zoos and mini zoos all over the world interactive map Rhinoceros unicornis found in Tiergarten Schonbrunn Vienna The term zoological garden refers to zoology the study of animals The term is derived from the Greek zwon zoon animal and the suffix logia logia study of The abbreviation zoo was first used of the London Zoological Gardens which was opened for scientific study in 1828 and to the public in 1847 1 In the United States alone zoos are visited by over 181 million people annually 2 Contents 1 Etymology 2 History 2 1 Royal menageries 2 2 Enlightenment Era 2 3 The modern zoo 2 4 British Empire 2 5 Germany 2 6 Poland 2 7 United States 2 8 Japan 2 9 Environmentalism 2 10 Human exhibits 3 Type 3 1 Safari park 3 2 Aquaria 3 3 Roadside zoos 3 4 Petting zoos 3 5 Animal theme parks 4 Zoo population management 4 1 Sources of animals 4 2 Dealing with space constraints and surplus animals 5 Justification 5 1 Conservation and research 5 2 Positive impacts on local wildlife 6 Roadside zoos 7 Animal welfare in zoos 7 1 Behavioural restriction 7 2 Abnormal behaviour 7 3 Longevity 7 4 Climate conditions 7 5 Epidemiology 8 Moral criticism 9 Live feeding 10 Regulation 10 1 United States 10 2 Europe 11 See also 12 Notes 13 Further reading 14 External linksEtymology A Siberian tiger Panthera tigris altaica at Korkeasaari Zoo in Helsinki Finland The London Zoo which was opened in 1828 was initially known as the Gardens and Menagerie of the Zoological Society of London and it described itself as a menagerie or zoological forest 3 The abbreviation zoo first appeared in print in the United Kingdom around 1847 when it was used for the Clifton Zoo but it was not until some 20 years later that the shortened form became popular in the song Walking in the Zoo by music hall artist Alfred Vance 3 The term zoological park was used for more expansive facilities in Halifax Nova Scotia Washington D C and the Bronx in New York which opened in 1847 1891 and 1899 respectively 4 Relatively new terms for zoos in the late 20th century are conservation park or bio park Adopting a new name is a strategy used by some zoo professionals to distance their institutions from the stereotypical and nowadays criticized zoo concept of the 19th century 5 The term bio park was first coined and developed by the National Zoo in Washington D C in the late 1980s 6 In 1993 the New York Zoological Society changed its name to the Wildlife Conservation Society and re branded the zoos under its jurisdiction as wildlife conservation parks 7 HistoryRoyal menageries Further information Menagerie The Tower of London housed England s royal menagerie for several centuries Picture from the 15th century British Library The predecessor of the zoological garden is the menagerie which has a long history from the ancient world to modern times The oldest known zoological collection was revealed during excavations at Hierakonpolis Egypt in 2009 of a ca 3500 BCE menagerie The exotic animals included hippopotami hartebeest elephants baboons and wildcats 8 King Ashur bel kala of the Middle Assyrian Empire created zoological and botanical gardens in the 11th century BCE In the 2nd century BCE the Chinese Empress Tanki had a house of deer built and King Wen of Zhou kept a 1 500 acre 6 1 km2 zoo called Ling Yu or the Garden of Intelligence Other well known collectors of animals included King Solomon of the Kingdom of Israel and Judah queen Semiramis and King Ashurbanipal of Assyria and King Nebuchadnezzar of Babylonia 9 By the 4th century BCE zoos existed in most of the Greek city states Alexander the Great is known to have sent animals that he found on his military expeditions back to Greece The Roman emperors kept private collections of animals for study or for use in the arena 9 the latter faring notoriously poorly The 19th century historian W E H Lecky wrote of the Roman games first held in 366 BCE At one time bear and a bull chained together rolled in fierce combat across the sand Four hundred bears were killed in a single day under Caligula Under Nero four hundred tigers fought with bulls and elephants In a single day at the dedication of the Colosseum by Titus five thousand animals perished Under Trajan lions tigers elephants rhinoceroses hippopotami giraffes bulls stags even crocodiles and serpents were employed to give novelty to the spectacle 10 Charlemagne had an elephant named Abul Abbas that was given to him by the Abbasid Caliph Henry I of England kept a collection of animals at his palace in Woodstock which reportedly included lions leopards and camels 11 The most prominent collection in medieval England was in the Tower of London created as early as 1204 by King John I Henry III received a wedding gift in 1235 of three leopards from Frederick II Holy Roman Emperor and in 1264 the animals were moved to the Bulwark renamed the Lion Tower near the main western entrance of the Tower It was opened to the public during the reign of Elizabeth I in the 16th century 12 During the 18th century the price of admission was three half pence or the supply of a cat or dog for feeding to the lions 11 The animals were moved to the London Zoo when it opened Aztec emperor Moctezuma had in his capital city of Tenochtitlan a house of animals with a large collection of birds mammals and reptiles in a garden tended by more than 600 employees The garden was described by several Spanish conquerors including Hernan Cortes in 1520 After the Aztec revolt against the Spanish rule and during the subsequent battle for the city Cortes reluctantly ordered the zoo to be destroyed 13 Enlightenment Era The Versailles menagerie during the reign of Louis XIV in the 17th century Further information List of zoos The oldest zoo in the world still in existence is the Tiergarten Schonbrunn in Vienna Austria It was constructed by Adrian van Stekhoven in 1752 at the order of Emperor Francis I to serve as an imperial menagerie as part of Schonbrunn Palace The menagerie was initially reserved for the viewing pleasure of the imperial family and the court but was made accessible to the public in 1765 14 In 1775 a zoo was founded in Madrid and in 1795 the zoo inside the Jardin des Plantes in Paris was founded by Jacques Henri Bernardin with animals from the royal menagerie at Versailles primarily for scientific research and education The planning about a space for the conservation and observation of animals was expressed in connection with the political construction of republican citizenship 15 The Kazan Zoo the first zoo in Russia was founded in 1806 by the Professor of Kazan State University Karl Fuchs The modern zoo Until the early 19th century the function of the zoo was often to symbolize royal power like King Louis XIV s menagerie at Versailles Major cities in Europe set up zoos in the 19th century usually using London and Paris as models The transition was made from princely menageries designed to entertain high society with strange novelties into public zoological gardens The new goal was to educate the entire population with information along modern scientific lines Zoos were supported by local commercial or scientific societies British Empire The modern zoo that emerged in the 19th century in the United Kingdom 16 was focused on providing scientific study and later educational exhibits to the public for entertainment and inspiration 17 A growing fascination for natural history and zoology coupled with the tremendous expansion in the urbanization of London led to a heightened demand for a greater variety of public forms of entertainment to be made available The need for public entertainment as well as the requirements of scholarly research came together in the founding of the first modern zoos Whipsnade Park Zoo in Bedfordshire England opened in 1931 It allowed visitors to drive through the enclosures and come into close proximity with the animals London Zoo 1835 The Zoological Society of London was founded in 1826 by Stamford Raffles and established the London Zoo in Regent s Park two years later in 1828 18 At its founding it was the world s first scientific zoo 9 19 Originally intended to be used as a collection for scientific study it was opened to the public in 1847 19 The Zoo was located in Regent s Park then undergoing development at the hands of the architect John Nash What set the London zoo apart from its predecessors was its focus on society at large The zoo was established in the middle of a city for the public and its layout was designed to cater for the large London population The London zoo was widely copied as the archetype of the public city zoo 20 In 1853 the Zoo opened the world s first public aquarium Dublin Zoo was opened in 1831 by members of the medical profession interested in studying animals while they were alive and more particularly getting hold of them when they were dead 21 Downs Zoological Gardens created by Andrew Downs and opened to the Nova Scotia public in 1847 It was originally intended to be used as a collection for scientific study By the early 1860s the zoo grounds covered 40 hectares with many fine flowers and ornamental trees picnic areas statues walking paths The Glass House which contained a greenhouse with an aviary aquarium and museum of stuffed animals and birds a pond a bridge over a waterfall an artificial lake with a fountain a wood ornamented greenhouse a forest area and enclosures and buildings 22 23 24 The first zoological garden in Australia was Melbourne Zoo in 1860 Germany Wild horses in the Erlebnispark Tripsdrill wildlife and theme park near Cleebronn in Southern Germany In German states leading roles came Berlin 1841 Frankfurt 1856 and Hamburg 1863 In 1907 the entrepreneur Carl Hagenbeck founded the Tierpark Hagenbeck in Stellingen now a quarter of Hamburg His zoo was a radical departure from the layout of the zoo that had been established in 1828 It was the first zoo to use open enclosures surrounded by moats rather than barred cages to better approximate animals natural environments 25 He also set up mixed species exhibits and based the layout on the different organizing principle of geography as opposed to taxonomy 26 Poland Bear in Silesian Zoological Garden in Chorzow Poland The largest tank of the Afrykarium in the Wroclaw Zoo shows the depths of the Mozambique Channel where sharks rays and other large pelagic fish can be viewed from this 18 meter long underwater acrylic tunnel The Wroclaw Zoo Polish Ogrod Zoologiczny we Wroclawiu is the oldest zoo in Poland opened in 1865 when the city was part of Prussia and was home to about 10 500 animals representing about 1 132 species in terms of the number of animal species it is the third largest in the world 27 In 2014 the Wroclaw Zoo opened the Africarium the only themed oceanarium devoted solely to exhibiting the fauna of Africa comprehensively presenting selected ecosystems from the continent of Africa Housing over 10 thousand animals the facility s breadth extends from housing insects such cockroaches to the large mammals like the elephants on an area of over 33 hectares 28 United States See also Barnum s American Museum In the United States the Philadelphia Zoo opened July 1 1874 earning its motto America s First Zoo The Lincoln Park Zoological Gardens in Chicago and the Cincinnati Zoo opened in 1875 In the 1930s federal relief programs provided financial aid to most local zoos The Works Progress Administration and similar New Deal government agencies helped greatly in the construction renovation and expansion of zoos when the Great Depression severely reduced local budgets It was a new deal for animals 29 The Atlanta zoo founded in 1886 suffered neglect By 1984 it was ranked among the ten worst zoos in the U S Systematic reform by 2000 put it on the list of the ten best 30 By 2020 the United States featured 230 accredited zoos and aquariums across 45 states accommodating 800 000 animals and 6 000 species out of which about 1 000 are endangered The zoos provide 208 000 jobs and with an annual budget of 230 million for wildlife conservation They attract over 200 million visits a year and have special programs for schools They are organized by the Association of Zoos and Aquariums 31 32 Japan Japan s first modern zoo Tokyo s Ueno Imperial Zoological Gardens opened in 1882 based on European models In World War II it was used to teach the Japanese people about the lands recently conquered by the Army In 1943 fearing American bombing attacks the government ordered the zoo to destroy dangerous animals that might escape 33 34 Environmentalism When ecology emerged as a matter of public interest in the 1970s a few zoos began to consider making conservation their central role with Gerald Durrell of the Jersey Zoo George Rabb of Brookfield Zoo and William Conway of the Bronx Zoo Wildlife Conservation Society leading the discussion From then on zoo professionals became increasingly aware of the need to engage themselves in conservation programs and the American Zoo Association soon said that conservation was its highest priority 35 In order to stress conservation issues many large zoos stopped the practice of having animals perform tricks for visitors The Detroit Zoo for example stopped its elephant show in 1969 and its chimpanzee show in 1983 acknowledging that the trainers had probably abused the animals to get them to perform 36 Mass destruction of wildlife habitat has yet to cease all over the world and many species such as elephants big cats penguins tropical birds primates rhinos exotic reptiles and many others are in danger of dying out Many of today s zoos hope to stop or slow the decline of many endangered species and see their primary purpose as breeding endangered species in captivity and reintroducing them into the wild Modern zoos also aim to help teach visitors the importance on animal conservation often through letting visitors witness the animals firsthand 37 Some critics and the majority of animal rights activists say that zoos no matter what their intentions are or how noble they are are immoral and serve as nothing but to fulfill human leisure at the expense of the animals which is an opinion that has spread over the years However zoo advocates argue that their efforts make a difference in wildlife conservation and education 37 Human exhibits Ota Benga who was featured as a human exhibit in New York 1906 Further information Human zoo Scientific racism and Social Darwinism Human beings were sometimes displayed in cages along with non human animals to illustrate the differences between people of European and non European origin In September 1906 William Hornaday director of the Bronx Zoo in New York with the agreement of Madison Grant head of the New York Zoological Society had Ota Benga a Congolese pygmy displayed in a cage with the chimpanzees then with an orangutan named Dohong and a parrot The exhibit was intended as an example of the missing link between the orangutan and white man It triggered protests from the city s clergymen but the public reportedly flocked to see Benga 38 39 Human beings were also displayed in cages during the 1931 Paris Colonial Exposition and as late as 1958 in a Congolese village display at Expo 58 in Brussels 40 TypeFurther information List of zoos and Immersion exhibit Monkey islands Sao Paulo Zoo Zoo animals live in enclosures that often attempt to replicate their natural habitats or behavioral patterns for the benefit of both the animals and visitors Nocturnal animals are often housed in buildings with a reversed light dark cycle i e only dim white or red lights are on during the day so the animals are active during visitor hours and brighter lights on at night when the animals sleep Special climate conditions may be created for animals living in extreme environments such as penguins Special enclosures for birds mammals insects reptiles fish and other aquatic life forms have also been developed Some zoos have walk through exhibits where visitors enter enclosures of non aggressive species such as lemurs marmosets birds lizards and turtles Visitors are asked to keep to paths and avoid showing or eating foods that the animals might snatch Safari park Main article Safari park Giraffes in the West Midland Safari Park Some zoos keep animals in larger outdoor enclosures confining them with moats and fences rather than in cages Safari parks also known as zoo parks and lion farms allow visitors to drive through them and come in close proximity to the animals 9 Sometimes visitors are able to feed animals through the car windows The first safari park was Whipsnade Park in Bedfordshire England opened by the Zoological Society of London in 1931 which today 2014 covers 600 acres 2 4 km2 Since the early 1970s an 1 800 acre 7 km2 park in the San Pasqual Valley near San Diego has featured the San Diego Zoo Safari Park run by the Zoological Society of San Diego One of two state supported zoo parks in North Carolina is the 2 000 acre 8 1 km2 North Carolina Zoo in Asheboro 41 The 500 acre 2 0 km2 Werribee Open Range Zoo in Melbourne Australia displays animals living in an artificial savannah Aquaria Further information Public aquarium Sea lions at the Melbourne Zoo The first public aquarium was opened at the London Zoo in 1853 This was followed by the opening of public aquaria in continental Europe e g Paris in 1859 Hamburg in 1864 Berlin in 1869 and Brighton in 1872 and the United States e g Boston in 1859 Washington in 1873 San Francisco Woodward s Garden in 1873 and the New York Aquarium at Battery Park in 1896 Roadside zoos Roadside zoos are found throughout North America particularly in remote locations They are often small for profit zoos often intended to attract visitors to some other facility such as a gas station The animals may be trained to perform tricks and visitors are able to get closer to them than in larger zoos 42 Since they are sometimes less regulated roadside zoos are often subject to accusations of neglect 43 and cruelty 44 In June 2014 the Animal Legal Defense Fund filed a lawsuit against the Iowa based roadside Cricket Hollow Zoo for violating the Endangered Species Act by failing to provide proper care for its animals 45 Since filing the lawsuit ALDF has obtained records from investigations conducted by the USDA s Animal and Plant Health Inspection Services these records show that the zoo is also violating the Animal Welfare Act 46 Petting zoos Main article Petting zoo Petting farm in Berlin Zoological Garden A petting zoo also called petting farms or children s zoos features a combination of domestic animals and wild species that are docile enough to touch and feed To ensure the animals health the food is supplied by the zoo either from vending machines or a kiosk nearby Animal theme parks Main article Animal theme park An animal theme park is a combination of an amusement park and a zoo mainly for entertaining and commercial purposes Marine mammal parks such as Sea World and Marineland are more elaborate dolphinariums keeping whales and containing additional entertainment attractions Another kind of animal theme park contains more entertainment and amusement elements than the classical zoo such as stage shows roller coasters and mythical creatures Some examples are Busch Gardens Tampa Bay in Tampa Florida both Disney s Animal Kingdom and Gatorland in Orlando Florida Flamingo Land in North Yorkshire England and Six Flags Discovery Kingdom in Vallejo California Zoo population managementSources of animals By the year 2000 most animals being displayed in zoos were the offspring of other zoo animals citation needed This trend however was and still is somewhat species specific When animals are transferred between zoos they usually spend time in quarantine and are given time to acclimatize to their new enclosures which are often designed to mimic their natural environment For example some species of penguins may require refrigerated enclosures Guidelines on necessary care for such animals is published in the International Zoo Yearbook 47 Dealing with space constraints and surplus animals Especially in large animals a limited number of spaces are available in zoos As a consequence various management tools are used to preserve the space for the genetically most important individuals and to reduce the risk of inbreeding Management of animal populations is typically through international organizations such as AZA and EAZA 48 Zoos have several different ways of managing the animal populations such as moves between zoos contraception sale of excess animals and euthanization culling 49 Contraception can be an effective way to limit a population s breeding However it may also have health repercussions and can be difficult or even impossible to reverse in some animals 50 Additionally some species may lose their reproductive capability entirely if prevented from breeding for a period whether through contraceptives or isolation but further study is needed on the subject 48 Sale of surplus animals from zoos was once common and in some cases animals have ended up in substandard facilities In recent decades the practice of selling animals from certified zoos has declined 49 A large number of animals are culled each year in zoos but this is controversial 51 A highly publicized culling as part of population management was that of a healthy giraffe at Copenhagen Zoo in 2014 The zoo argued that its genes already were well represented in captivity making the giraffe unsuitable for future breeding There were offers to adopt it and an online petition to save it had many thousand signatories but the culling proceeded 52 Although zoos in some countries have been open about culling the controversy of the subject and pressure from the public has resulted in others being closed 49 This stands in contrast to most zoos publicly announcing animal births 49 Furthermore while many zoos are willing to cull smaller and or low profile animals fewer are willing to do it with larger high profile species 49 51 JustificationConservation and research The African plains exhibit at North Carolina Zoo illustrates the dimension of an open range zoo The position of most modern zoos in Australasia Asia Europe and North America particularly those with scientific societies is that they display wild animals primarily for the conservation of endangered species as well as for research purposes and education and secondarily for the entertainment of visitors 53 54 The Zoological Society of London states in its charter that its aim is the advancement of Zoology and Animal Physiology and the introduction of new and curious subjects of the Animal Kingdom It maintains two research institutes the Nuffield Institute of Comparative Medicine and the Wellcome Institute of Comparative Physiology In the U S the Penrose Research Laboratory of the Philadelphia Zoo focuses on the study of comparative pathology 9 The World Association of Zoos and Aquariums produced its first conservation strategy in 1993 and in November 2004 it adopted a new strategy that sets out the aims and mission of zoological gardens of the 21st century 55 When studying behaviour of captive animals several things should however be taken into account before drawing conclusions about wild populations Including that captive populations are often smaller than wild ones and that the space available to each animal is often less than in the wild 56 Conservation programs all over the world fight to protect species from going extinct but many conservation programs are underfunded and under represented Conservation programs can struggle to fight bigger issues like habitat loss and illness It often takes a lot of funding and long time periods to rebuild degraded habitats both of which are scarce in conservation efforts The current state of conservation programs cannot rely solely on situ on site conservation plans alone ex situ off site conservation may therefore provide a suitable alternative Off site conservation relies on zoos national parks or other care facilities to support the rehabilitation of the animals and their populations Zoos benefit conservation by providing suitable habitats and care to endangered animals When properly regulated they present a safe clean environment for the animals to increase populations sizes A study on amphibian conservation and zoos addressed these problems by writing Whilst addressing in situ threats particularly habitat loss degradation and fragmentation is of primary importance for many amphibian species in situ conservation alone will not be enough especially in light of current un mitigatable threats that can impact populations very rapidly such as chytridiomycosis an infectious fungal disease Ex situ programmes can complement in situ activities in a number of ways including maintaining genetically and demographically viable populations while threats are either better understood or mitigated in the wild 57 The breeding of endangered species is coordinated by cooperative breeding programmes containing international studbooks and coordinators who evaluate the roles of individual animals and institutions from a global or regional perspective and there are regional programmes all over the world for the conservation of endangered species In Africa conservation is handled by the African Preservation Program APP 58 in the U S and Canada by Species Survival Plans 59 in Australasia by the Australasian Species Management Program 60 in Europe by the European Endangered Species Program 61 and in Japan South Asia and South East Asia by the Japanese Association of Zoos and Aquariums the South Asian Zoo Association for Regional Cooperation and the South East Asian Zoo Association Positive impacts on local wildlife Besides conservation of captive species large zoos may form a suitable environment for wild native animals such as herons to live in or visit A colony of black crowned night herons has regularly summered at the National Zoo in Washington D C for more than a century 62 Some zoos may provide information to visitors on wild animals visiting or living in the zoo or encourage them by directing them to specific feeding or breeding platforms 63 64 Roadside zoosIn modern well regulated zoos breeding is controlled to maintain a self sustaining global captive population This is not the case in some less well regulated zoos often based in poorer regions Overall stock turnover of animals during a year in a select group of poor zoos was reported as 20 25 with 75 of wild caught apes dying in captivity within the first 20 months 65 The authors of the report stated that before successful breeding programs the high mortality rate was the reason for the massive scale of importations One 2 year study indicated that of 19 361 mammals that left accredited zoos in the U S between 1992 and 1998 7 420 38 went to dealers auctions hunting ranches unaccredited zoos and individuals and game farms 66 Animal welfare in zoosFurther information Captivity animal and Behavioral enrichment Bear cages one square meter in size in Dalian zoo Port Arthur Liaoning Province China in 1997 The welfare of zoo animals varies widely Many zoos work to improve their animal enclosures and make it fit the animals needs but constraints such as size and expense can complicate this 67 68 The type of enclosure and the husbandry are of great importance in determining the welfare of animals Substandard enclosures can lead to decreased lifespans caused by factors as human diseases unsafe materials in the cages and possible escape attempts Bendow 382 However when zoos take time to think about the animal s welfare zoos can become a place of refuge There are animals that are injured in the wild and are unable to survive on their own but in the zoos they can live out the rest of their lives healthy and happy McGaffin In recent years some zoos have chosen to move out some larger animals because they do not have the space available to provide an adequate enclosure for them Lemonic McDowell and Bjerklie 50 An issue with animal welfare in zoos is that best animal husbandry practices are often not completely known Especially for species that are only kept in a small number of zoos 56 To solve this organizations like EAZA and AZA have begun to develop husbandry manuals 69 70 Behavioural restriction Many modern zoos attempt to improve animal welfare by providing more space and behavioural enrichments This often involves housing the animals in naturalistic enclosures that allow the animals to express more of their natural behaviours such as roaming and foraging Whilst many zoos have been working hard on this change in some zoos some enclosures still remain barren concrete enclosures or other minimally enriched cages 71 Sometimes animals are unable to perform certain behaviors in zoos like seasonal migration or traveling over large distances Whether these behaviors are necessary for good welfare however is unclear Some behaviors are seen as essential for an animal s welfare whilst others aren t 72 It is however shown that even in limited spaces certain natural behaviors can still be performed A study in 2014 for example found that Asian elephants in zoos covered similar or higher walking distances then sedentary wild populations 73 Migration in the wild can also be related to food scarcity or other unfavorable environmental problems 74 However a proper zoo enclosure never runs out of food or water and in case of unfavorable temperatures or weather animals are provided with indoor shelter Abnormal behaviour Further information List of abnormal behaviours in animals Animals in zoos can exhibit behaviors that are abnormal in their frequency intensity or would not normally be part of their behavioural repertoire Whilst these types of behaviors can be a sign of bad welfare and stress this isn t necessarily the case Other measurements or behavioral research is advised before determining whether an animal performing stereotypical behavior is living in bad welfare or not 75 Examples of stereotypical behaviors are pacing head bobbing obsessive grooming and feather plucking 76 A study examining data collected over four decades found that polar bears lions tigers and cheetahs can display stereotypical behaviors in many older exhibits However they also noted that in more modern naturalistic exhibits these behaviors could completely disappear 77 Elephants have also been recorded displaying stereotypical behaviours in the form of swaying back and forth trunk swaying or route tracing This has been observed in 54 of individuals in UK zoos 78 However it has been shown that modern facilities and modern husbandry can greatly decrease or even entirely remove abnormal behaviors A study of a group of elephants in Planckendael showed that the older wild caught animals displayed many stereotypical behaviors These elephants had spend part of their lives either in a circus or in other substandard enclosures On the other hand the elephants born in the modern facilities that had lived in a herd their whole life barely displayed any stereotypical behaviors at all 79 The life history of an animal is thus extremely important when analyzing the causes of stereotypical behavior as this can be a historical relict instead of a result of present day husbandry Longevity The influence on a zoological environment on animal s longevity is not straightforward A study of 50 mammal species found that 84 of them actually lived longer in zoos than they would in the wild on average 80 On the other hand some research claims that elephants in Japanese zoos would live shorter than their wild counterparts at just 17 years This has been refuted by other studies however 81 It is important to acknowledge here that studies might not yet fully represent recent improvements in husbandry For example studies show that captive bred elephants already have a lower mortality risk then wild caught ones 82 Climate conditions Climatic conditions can make it difficult to keep some animals in zoos in some locations For example Alaska Zoo had an elephant named Maggie She was housed in a small indoor enclosure because the outdoor temperature was too low 83 84 Epidemiology Tsetse flies have invaded zoos that have been established in the tsetse zone More concerning tsetse borne species of trypanosomes have entered zoos outside the traditional tsetse zone in infected animals imported and added to their collections Whether these can be controlled depends on several factors Vale 1998 found that the technique used in placing attractants was important and Green 1988 Torr 1994 Torr et al 1995 and Torr et al 1997 found the availability for specifically needed attractants for the specific job to also vary widely 85 86 Moral criticismSome critics and many animal rights activists claim that zoo animals are treated as voyeuristic objects rather than living creatures and often suffer due to the transition from being free and wild to captivity 87 However ever since imports of wild caught animals became more regulated by organizations like CITES and national laws zoos have started sustaining their populations via breeding This change started around the 1970s Many cooperations in the form of breeding programs have been set up since for both common and endangered species 88 89 90 Live feedingIn some countries feeding live vertebrates to zoo animals is illegal under most circumstances The UK Animal Welfare Act of 2006 for example states that prey must be killed for feeding unless this threatens the health of the predator 91 Some zoos had already adopted such practices prior to the implementation of such policies London zoo for example stopped feeding live vertebrates in the 20th century long before the Animal Welfare Act was put in place in 2006 91 Despite being illegal in China some zoos have been found to still feed live vertebrates to their predators In some parks like Xiongsen Bear and Tiger Mountain Village live chickens and other livestock were found to be thrown into the enclosures of tigers and other predators In Guilin in south east China live cows and pigs are thrown to tigers to amuse visitors Other Chinese parks like Shenzhen Safari Park have already stopped this practice after facing heavy criticism 92 Regulation WPA 1937 poster promoting visits to American zoos United States In the United States any public animal exhibit must be licensed and inspected by the Department of Agriculture the Environmental Protection Agency and the Occupational Safety and Health Administration Depending on the animals they exhibit the activities of zoos are regulated by laws including the Endangered Species Act the Animal Welfare Act the Migratory Bird Treaty Act of 1918 and others 93 Additionally zoos in several countries may choose to pursue accreditation by the Association of Zoos and Aquariums AZA which originated in the U S To achieve accreditation a zoo must pass an application and inspection process and meet or exceed the AZA s standards for animal health and welfare fundraising zoo staffing and involvement in global conservation efforts Inspection is performed by three experts typically one veterinarian one expert in animal care and one expert in zoo management and operations and then reviewed by a panel of twelve experts before accreditation is awarded This accreditation process is repeated once every five years The AZA estimates that there are approximately 2 400 animal exhibits operating under USDA license as of February 2007 fewer than 10 are accredited 94 Europe The European Union introduced a directive to strengthen the conservation role of zoos making it a statutory requirement that they participate in conservation and education and requiring all member states to set up systems for their licensing and inspection 95 Zoos are regulated in the UK by the Zoo Licensing Act of 1981 which came into effect in 1984 A zoo is defined as any establishment where wild animals are kept for exhibition to which members of the public have access with or without charge for admission seven or more days in any period of twelve consecutive months excluding circuses and pet shops The Act requires that all zoos be inspected and licensed and that animals kept in enclosures are provided with a suitable environment in which they can express most normal behavior 95 See also Animals portal List of zoos Wildlife refuge List of zoo associations Animals in captivity Environmental enrichment Conservation Wildlife conservation Ex situ conservation In 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animals come from and where do they go Zoological Society of London ZSL Archived from the original on 2020 11 02 Retrieved 2021 01 22 About The Zoological Society Zoological Society of Milwaukee Archived from the original on 2021 10 28 Retrieved 2021 10 28 PROGRAMMES EAZA www eaza net Archived from the original on 2021 01 26 Retrieved 2021 01 22 a b Live Feeding Prey to Captive Predators Faunalytics October 17 2014 Archived from the original on January 30 2021 Retrieved January 23 2021 Ferocity training Sunday Morning Post Hong Kong November 29 1999 Archived from the original on July 28 2011 Retrieved June 24 2009 Grech Kali S Overview of the Laws Affecting Zoos Archived 2012 06 24 at the Wayback Machine Michigan State University College of Law Animal Legal amp Historical Center 2004 AZA Accreditation Introduction Archived from the original on November 2 2007 a b The Zoo Licensing Act 1981 Archived May 4 2008 at the Wayback Machine Department for Environment Food and Rural Affairs Further readingBaratay Eric and Elizabeth Hardouin Fugier 2002 History of Zoological Gardens in the West Blunt Wilfrid 1976 The Ark in the Park The Zoo in the Nineteenth Century Hamish Hamilton London ISBN 0 241 89331 3 online Braverman Irus 2012 Zooland The Institution of Captivity Stanford University Press ISBN 9780804783576 excerpt Archived 2021 04 11 at the Wayback Machine Bruce Gary 2017 Through the Lion Gate A History of the Berlin Zoo excerpt Archived 2021 10 28 at the Wayback Machine Conway William 1995 The conservation park A new zoo synthesis for a changed world in The Ark Evolving Zoos and Aquariums in Transition Wemmer Christen M ed Smithsonian Institution Conservation and Research Center Front Royal Virginia Donahue Jesse C and Erik K Trump 2014 American zoos during the depression a new deal for animals McFarland 2014 Fisher James 1967 Zoos of the World The Story of Animals in Captivity popular history Hardouin Fugier Elisabeth 2004 Zoo A History of Zoological Gardens in the West Hyson Jeffrey 2000 Jungle of Eden The Design of American Zoos in Environmentalism in Landscape Architecture Conan Michel ed Dumbarton Oaks Washington ISBN 0 88402 278 1 Hochadel Oliver Watching Exotic Animals Next Door Scientific Observations at the Zoo ca 1870 1910 Science in Context June 2011 24 2 pp 183 214 online Archived 2021 08 17 at the Wayback Machine Hyson Jeffrey 2003 Zoos in Krech III Shepard Merchant Carolyn McNeill John Robert eds 2004 Encyclopedia of World Environmental History 3 O Z Index Routledge ISBN 978 0 415 93735 1 The International Zoo Yearbook annual since 1959 from the Zoological Society of London Kohler Robert E 2006 All Creatures Naturalists Collectors and Biodiversity 1850 1950 Princeton University Press Kisling Vernon N ed 2001 Zoo and Aquarium History Ancient Animal Collections to Zoological Gardens 2001 excerpt Archived 2016 01 25 at the Wayback Machine Maddeaux Sarah Joy 2014 A delightful resort for persons of all ages and more especially for the young Children at Bristol Zoo Gardens 1835 1940 Journal of the History of Childhood and Youth 7 1 2014 87 106 excerpt Maple Terry 1995 Toward a Responsible Zoo Agenda in Ethics on the Ark Zoos Animal Welfare and Wildlife Conservation Norton Bryan G Hutchins Michael Stevens Elizabeth F and Maple Terry L ed Smithsonian Institution Press Washington ISBN 1 56098 515 1 Meuser Natascha 2019 Zoo Buildings Construction and Design Manual DOM publishers Berlin ISBN 978 3 86922 680 4 Miller Ian Jared and Harriet Ritvo The Nature of the Beasts Empire and Exhibition at the Tokyo Imperial Zoo 2013 excerpt Archived 2021 10 28 at the Wayback Machine Murphy James B 2007 Herpetological History of the Zoo amp Aquarium World Reichenbach Herman 2002 Lost Menageries Why and How Zoos Disappear Part 1 International Zoo News Vol 49 3 No 316 April May 2002 Robinson Michael H 1987a Beyond the zoo The biopark Defenders of Wildlife Magazine Vol 62 No 6 Robinson Michael H 1987b Towards the Biopark The Zoo That Is Not American Association of Zoological Parks and Aquariums Annual Proceedings Rothfels Nigel 2008 Savages and Beasts The Birth of the Modern Zoo excerpt Archived 2020 11 26 at the Wayback Machine Woods Abigail 2018 Doctors in the Zoo Connecting Human and Animal Health in British Zoological Gardens c 1828 1890 In Animals and the Shaping of Modern Medicine Palgrave Macmillan Cham 2018 pp 27 69 External linksWikimedia Commons has media related to Zoos Look up zoo in Wiktionary the free dictionary Zoos Worldwide Zoos aquariums animal sanctuaries and wildlife parks Zoological Gardens keeping Asian Elephants The Bartlett Society Devoted to studying yesterday s methods of keeping wild animals download page Retrieved from https en wikipedia org w index php title Zoo amp oldid 1052392409, wikipedia, wiki, book,

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