Today, sloths are slow-moving, tree-dwelling creatures that live in Central and South America and can grow up to 2.5 feet long. Thousands of years ago, however, some sloths walked along the ground, ...

Add Yahoo as a preferred source to see more of our stories on Google. Close up of a fuzzy sloth face Massive Megatherium sloths once stood as large as Asian elephants, ripping foliage off treetops ...

When you picture the jungle, your mind might jump to roaring tigers, monkeys swinging wildly from tree to tree, or bright parrots flitting between branches. But high above, in the dense green canopy, ...