what's a sloth?
A sloth is a slow moving herbivorous mammal that has been around in the Americas for at least 60 million years. Until about 12,000 years ago, most of the many species were ground sloths, and some of them-most famously the Megatherium-were as large as elephants. At one time they inhabited both North and South America. Today there are six living species of tree sloths in the rainforests of South America.