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 ...

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.

Recent excavations in South America have unearthed a fascinating glimpse into the prehistoric world, revealing the existence of giant, elephant-sized sloths that once carved massive, 2000-foot-long ...

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 ...

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 ...