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 ...

Scout and Fiona, a pair of two-toed sloths, and a troop of marmosets enjoyed a pumpkin party in their habitat at the zoo on Oct. 29.

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

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