Sloth selfie bans are spreading because cute photos hide stress, disease risk, and illegal wildlife trade most tourists never see.

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

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 ...

Wilpattu National Park, Sri Lanka’s largest and a prime location for year-round sloth bear sightings, has sparked concern after the sudden deaths of three sloth bears (Melursus ursinus inornatus) ...