Long before today’s tree-dwelling sloths, a 4-ton giant roamed South America — and it may have stood and fought like a bear.

It’s not considered polite to talk about it, but we all do it. Some of us are in and out so quickly that nobody would even ...

Wrong. Sloth bears have a nasty habit of going on an explosive attack if they’re startled and using their sharp claws to rake down the front of their victims, ripping off their faces and gouging out ...

Among the greatest mysteries of the tropical rainforest are the pooping habits of sloths. Really. Those furry, slow-moving tree dwellers almost never descend from the safety of the tree tops—except ...

Sloths always have a slight smile on their lips, making them appear friendly and cute. These incredibly slow tree dwellers ...