New research shows 8,000-pound sloths once dug caves, adapted to oceans, and roamed widely—until climate and humans brought their downfall.

Ahead of a road construction project in Lubbock, Texas, the state's Department of Transportation sent archaeologists to ...

Explore how ancient sloths evolved in size, from small climbers to massive ground dwellers, shaped by shifting climates and ...

Most people are familiar with modern sloths — slow-moving, tree-dwelling mammals that digest food slowly and descend only ...

The extinct mammals were about five times larger than a grizzly bear–and filled caves with their poop.

Most of us are familiar with sloths, the bear-like animals that hang from trees, live life in the slow lane, take a month to ...

The National Park Service says there are two different kinds of ground sloths, and the bones found in the construction site are likely remnants of the Shasta Ground Sloth or Nothrotheriops shastensis.

A Texas road project unearthed remains of Ice Age era animals. Here's what they found, and what will happen to the remains.

While mummified versions of the ground sloths have been found in New Mexican desert caves, the Shasta Ground Sloth mostly inhabited “dry, open juniper woodlands, seasonal wetlands, and open ...

Further information could still be discovered." The Shasta ground sloth is one of the two species of giant ground sloth found from Tule Springs Fossil Beds National Monument. TxDOT is in contact ...