The European Association of Zoos and Aquaria also promotes conservation and quality among its 345 members.
Staff at the two Devon zoos are making sure animals are comfortable in sub-zero temperatures.
Zoos and animal amusement attractions use the cover of "science" to justify their shows.
But he argues that zoos have a crucial advocacy role for animals in the wild.
Zoos now have access to a ghostly menagerie of frozen embryos for test-tube breeding.
They also believe keeping animals in zoos and aquariums where there are high death rates is permissible.
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"If people want to see real animals, for example, there's not a lot of zoos, " she said.
It said Pattycake surpassed the median life span for gorillas in zoos, which is 37 years old.
First, the intentional, senseless slaughter of elephants for ivory and to steal babies to sell to zoos.
Two of them remain at the zoo, while the other three have departed to zoos in France.
The Wildlife Conservation Society said Pattycake was the 31st oldest gorilla of 338 living in North American zoos.
Conscious of the speed at which habitat is being lost, zoos are trying to avert dangers in advance.
Whether zoos should keep animals confined is a hotly debated topic, with both the public and animal experts having varying opinions.
The folder on my computer where I store these factoids contains scores of categories, from Arctic Survival to Zoos.
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The long-term plan is for the tragopans to live in special aviaries in several Indian zoos in the Himalayas.
And he believes that if wild polar bears die out there is no point keeping some alive in zoos.
Primatologists have spent years observing them, either in African forests or at zoos.
Ninety species of parrot are threatened with extinction and zoos worldwide are working hard to try to save them.
Mainly because funds are scarce, they do less to preserve endangered species than do zoos in America or Europe.
Larger zoos employ behaviouralists to think up ways of keeping animals mentally alert.
He works with zoos and conservation groups, with the ultimate goal of reintroducing the animals back to their native habitat.
Zoos say they already have more tigers than they can take, and repatriation to Asia is out of the question.
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Others still come from zoos which are closing down, including the porcupine, who was unwanted on the Isle of Wight.
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Researchers from Bristol University studied 77 animals in 13 zoos and found that almost half of the elephants displayed abnormal behaviour.
Several agricultural colleges, zoos, and community farms have closed, and even RSPCA inspectors are having to avoid setting foot on farmland.
The zoos agreed it was best to move her to Cincinnati, where two experienced mother gorillas are available to serve as surrogates.
It features a carnival, livestock and horse shows, petting zoos, live music from country music superstars, and of course a bona-fide rodeo.
On its latest release, Dizzy, it puts an entirely new spin on subjects familiar to kids, such as libraries, zoos and balloons.
Fort Worth is a good example of how dynamic zoos are becoming.
Animal-rights activists have pushed zoos to take better care of their animals.
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