It has been argued that the conservation programs aim to save endangered species from the edge of extinction (Lyons, 2009). The zoos also take part in breeding and funding programs that try to enhance the population of endangered wildlife and protect their habitats. For example, the Melbourne Zoo had raised over $9000 by collecting and resale old phones in order to safeguard gorilla habitats (Dean, 2009). We must admit that these actions are quite effective in the evidence that supporters provide. However, it must be remembered that there are still difficulties of those programs that hardly overcome. As stated by Whiting, the problem of genetic diversity can be a burden. The idea is that a small population can possibly cause inbreeding with the result of frailer offspring (Whiting). This may well lead to the hurdle in the concept of re-introduction. In fact, captive bred animals often struggle with the environment since they are lack of instinct or knowledge to survive in the wild (Whiting). Moreover, there will be no so called home for them, as poaching and habitat destruction still remain a threat (Whiting).
Supporters of zoos claim that the zoos acknowledge about wild animals behaviors and carry out research that help people to improve their understanding about wildlife. This position goes on to assert