Animals behave not in the same way, as they do in the Nature. They are treated very bad. They go mad of being isolated.
All these facts have negative influense on children. They get no facts about wild animals and they start thinking that catching animals for zoos is ok - they become cruel. They start thinking that a human can do with animals whatever he wants. But animals are not toys!
Never take children to the zoos. Beside that, you give your money for it - the more money people give, the longer this industry will exist! Don't pay money for it, if you love animals!
Contact zoos are the worst! People touch pets whole the day! They can't even hide and have a rest! And when they become old and not so attractive (for some people) anymore, they end their life at the slaughterhouse!
And animals in contact zoos are fed with pills, which make them not dangerous.