Ancient sloths lived in trees, on mountains, in deserts, boreal forests and open savannahs. These differences in habitat are primarily what drove the wide difference in size between sloth species. But ...

Sloths, the world's slowest mammals, have evolved over 64 million years into a species that thrives throughout Central America and northern South America, but climate change and human sprawl could be ...

A vulnerable sloth is seen facing off against a large dog in an image that highlights a heartbreaking conservation issue. American photographer Suzi Eszterhas entered it into the 58th Wildlife ...

While humans wouldn’t be very happy to find that organisms were growing on their skin, particularly fungi, algae, and insects, it works out pretty well for sloths. Sloths may be hosting entire ...

Massive Megatherium sloths once stood as large as Asian elephants, ripping foliage off treetops with prehensile tongues like today's giraffes. "They looked like grizzly bears but five times larger," ...

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 ...

We have two words for you: baby. sloths. Baby sloths! Is there anything cuter in the entire world than a baby sloth? The internet couldn't get over the baby sloths at the Sloth Conservation Foundation ...

Defecating exposes sloths to predators on the jungle floor. An unexpected ally benefits, and returns the favor. A brown-throated three-toed sloth peers over a tree's buttress root while defecating on ...

Costa Rica can be considered a paradise for many reasons. It’s home to more than 800 miles of coastline bordering the Atlantic Ocean and the Caribbean Sea, more than 50% of the country is made up of ...