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

Add Yahoo as a preferred source to see more of our stories on Google. © Smithsonian’s National Zoo and Conservation Biology Institute The post A Win for the ...

Today, sloths are slow-moving, tree-dwelling creatures that live in Central and South America and can grow up to 2.5 feet long. Thousands of years ago, however, some sloths walked along the ground, ...

Giant sloths with razor-sharp claws and as large as Asian bull elephants once roamed the Earth, snacking on leaves at the tops of trees with a prehensile tongue. Now, scientists have figured out why ...

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.

Ancient sloths ranged in size from tiny climbers to ground-dwelling giants. Now, researchers report this body size diversity was largely shaped by sloths’ habitats, and that these animals’ precipitous ...

COLORADO SPRINGS, Colo. — On Tuesday, the Cheyenne Mountain Zoo announced it has welcomed a new baby sloth. The sloth was born on Dec. 18. The mom, a 9-year-old Hoffman's two-toed sloth named Aysan, ...

Stone Zoo in Stoneham, Massachusetts, is welcoming the facility’s newest – if not the slowest – member of the animal community. The Linne’s two-toed sloth pup, whose gender is not yet known, was born ...

Add Yahoo as a preferred source to see more of our stories on Google. Photo Credit: iStock An international wildlife trading organization has imposed stricter regulations on the sale and transfer of ...

Tens of thousands of sloths are illegally trafficked, with many of them dying in the process, but officials are determined to save these species. Mongabay News reported on the growing crisis, and ...

WICHITA, Kan. (KWCH) - A prehistoric discovery near Hays is shedding some new light on a giant ground sloth species that lived more than 10,000 years ago. A study published Monday in the peer-reviewed ...

Scientists have analyzed ancient DNA and compared more than 400 fossils from 17 natural history museums to figure out how and why extinct sloths got so big. Most of us are familiar sloths, the ...