Among the glistening dunes of New Mexico's White Sands National Monument, scientists have been taken aback by the discovery of footprints. The footprints belong to the extinct giant ground sloth, ...

SAO PAULO (AP) — 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. For ...

People tracking giant sloths thousands of years ago in what is now New Mexico left footprints that confirm humans once hunted the giant creatures, researchers report April 25 in Science Advances.

The aggression of sloth bear's could be explained by the species' early coexistence with tigers, a new study suggests. Sloth bears are considered one of the most dangerous animals in Asia. Although an ...

Millions of years before the White Sands National Monument became a stark landscape of gypsum sand dunes, it was the site of a salty sea. When those waters evaporated about 12,000 years ago, they left ...

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 (3.6 metric tons ...