If an animal in a zoo is being treated well and has a large enough enclosure then I do not see the problem. Now of course if an animal is being starved or has too small of an enclosure then I feel that something must be done. However if the conditions are optimal and the animal is happy then where is the problem exactly?
Animals should be out of the zoos they can do their part of the food chain!! Animals should just be left alone in the wild let them be what they can be!! Animals should stay in the wild to help the food chain. Animals are being abused stot abusing animals!