Spurred by social media, attractions where visitors interact with animals have surged. Advocates are sounding alarms. Spurred by social media, attractions where visitors interact with animals have ...

CC0 Usage Conditions ApplyClick for more information. The decision for keepers at the Smithsonian's National Zoo to hand-raise a female sloth bear cub instead of leaving her with her mother Khali ...

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

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American Everybody loves sloths, and whenever we talk ...

The Smithsonian's National Zoo is home to three Linnaeus's two-toed sloths and shares some sloth basics, but here are three lesser-known sloth facts. 1. The Smithsonian has a collection of fossilized ...