Sloths weren't always slow-moving, furry tree-dwellers. Their prehistoric ancestors were huge — up to 4 tons (3.6 metric tons) — and when startled, they brandished immense claws. Video above: ...

Sloths weren’t always slow-moving, furry tree-dwellers. Their prehistoric ancestors were huge – up to 4 tons – and when startled, they brandished immense claws. For a long time, scientists believed ...

Known for their peaceful appearance and the impression that they’re always smiling, sloths now have extra protection to ...

There are millions of sloths in Costa Rica. But with high levels of deforestation over the past few decades and increasing contact with humans, the population is taking a hit. While no official stats ...

Athena, the Linnaeus's two-toed sloth at the National Zoo, died overnight on November 13 after rapidly losing weight ...

International research and highly-specialized divers are bringing an underground, underwater world to the surface ...

The apparent docility and friendliness of “smiling” sloths have made them tourist darlings, but have also put a target on their backs. The rise in trafficking of these animals led the governments of ...

Larisa R. G. DeSantis received funding from the National Science Foundation, the Guggenheim Foundation, and Vanderbilt University. DeSantis is also a research associate at the La Brea Tar Pits and ...

Vasi the sloth bear is using his new limb to dig, climb and play at Bannerghatta Bear Rescue Centre in India Kelli Bender is the Pets Editor at PEOPLE. She has been working at PEOPLE since 2013. Her ...

A newborn sloth is making this zoo all warm and fuzzy. An adorable tiny two-toed sloth named Beanie’s Baby made its public debut at Elmwood Park Zoo in Norristown, Pennsylvania, on Wednesday, ...

Workplace trends are often assigned innocuous names to help them catch on more easily, however, the implications of the trends are far more concerning than the term lets on. Workers are now “job ...

Part 3. 1Xtra's Rap Show with Charlie Sloth, Best of the Guest Mixes ...