Zoo animals are usually kept in very cramped spaces and do not behave like they would if they weren’t in that enclosed space. Polar bears, for example, are given npt that much walking space whereas in their Arctic home they roam for many hundreds of miles. Similarly, big cats and birds are often in tiny cages where they lack exercise they need to survive. Many animals develop unnatural behaviors such as pacing back and forth, swaying from side to side or being mean to the zookeepers.
Supporters of zoos argue that they help to conserve endangered species, but in fact they are not very good at this. Even the place where the pandas breed has been very costly and not that great. Also, the zoo life for many endangered animals does not prepare animals for the challenges of life in the wild at all. For example, two rare lynxes released into the wild in Colorado died from starvation even though the area was full of hares. Hares are a lynx’s natural enemies.
The zoo is an unnatural environment that exposes animals to numerous dangers. Diseases often spread between species that would never live together naturally causing them to die and not survive to their full capability. For example, many Asian elephants have died in the US today