Caged animals in zoos are deprived of their normal society, their families and mates.
Tigers can’t run, birds can’t soar the sky, monkeys can’t swing through the trees, and elephants can’t roam over large distances.
Animals which would naturally roam for tens of miles a day, tread the same few paces. Some of the fastest animals on earth live in pens so small that they could not gather pace to a trot, let alone full speed.
Some zoo enclosures deprive the prisoners’ most basic behaviors including exercise, social interaction and bathing.

For more information please go to:
http://onlyonesolution.org/multimedia-articles/lunatic_asylum.html