It is nearly impossible to release captive-bred animals into the wild. A 1994 report by the World Society for the Protection of Animals showed that only 1,200 zoos out of 10,000 worldwide are registered for captive breeding and wildlife conservation. Those that are endangered may have their plight made worse by zoos' focus on crowd appeal. In his book The Last Panda , George Schaller, the scientific director of the Bronx Zoo, says zoos are actually contributing to the near-extinction of giant pandas by constantly shuttling the animals from one zoo to another for display. In-breeding is also a problem among captive populations.
Zoos often sell or kill animals who no longer attract visitors.
Ultimately, we will only save endangered species if we save their habitats and combat the reasons people kill them. Instead of supporting zoos, we should support groups like the International Primate Protection League, The Born Free Foundation, the African Wildlife Foundation, and other groups that work to preserve habitats, not habits. We should help non-profit sanctuaries, like Primarily Primates and the Performing Animal Welfare Society, that rescue and care for exotic animals, but don't sell or breed them. Zoos truly interested in raising awareness of wildlife and conservation should follow the example of the Worldlife Center in London. The Center plans to create a high-tech zoo with no animals.