Sloths are slow-moving mammals native to Central and South America. They have short, flat heads; big eyes; long legs; and stubby tails. Sloths are omnivores that eat plants like leaves as well as small animals. They spend most of their time hanging upside down in trees and can go for weeks without coming down to the ground. Though threatened by hunting and habitat loss, sloths live 30-40 years in the wild.