Here is how you can get over any problems with zoos "caging" animals -- just realize that they are animals, not people. As long as the zoo humanely cares and exhibits its residents, those animals do not care about human concepts like "freedom" and "liberty". What animals care about is eating, roaming, and reproducing. Most of America's modern zoos provide for those animal needs quite well. Allen Nyhuis, Coauthor: America's Best Zoos