When zoos think of good health for an animal they usually do not think of their overall wellbeing, they just think about how to keep them alive. The animals cannot do their natural things to stay sane. The animals will develop depression they cannot do the things they do in the wild, they also cannot roam and find mates the way they want. I know I would go Crazy without contact from the outside world, what about you? A majority of animals in zoos live half than their normal life expectancy out in the wild but at least they are happy and not harmed by humans. The chemicals used to clean their cages do a lot of harm to them physically and the stress from being in such an unnatural habitat commonly makes the Animal go insane and some may even attempt suicide! Yes, animals can and will kill them self if they are depressed. That is not healthy for any human or animal to feel this way.
Even though the zoos do try to make a habitat seem real, it is not anything close to real for the wild life. No matter how much you try, no one can make an exact replica of a habitat inside of bars. The name wild life means that they are wild and deserve to be wild and free. They will have the things they need to survive but not to actually be happy. They might have trees to climb on but they want more, maybe bigger ones, taller ones. They might have a man built pond, but they want a natural big spring or lake. The animals seem to have everything they need but look at it from their point of view. They want