Researchers analyzed fossils and DNA to get a big-picture view of sloth evolution and determine what drove their immense size ...

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

An exhibition featuring skeletons and models of giant prehistoric animals is heading to Birmingham and Edinburgh early next ...

The largest sloths, including Megatherium and Mylodon, likely evolved from a tree-adapted sloth that ultimately decided to stay ... Then something earth-shattering occurred. A giant wound opened up ...

Sloths have a reputation for being sluggish and slow, spending most of their lives dozing in trees, but a new study suggests ...

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

The largest sloths, including Megatherium and Mylodon, likely evolved from a tree-adapted sloth that ultimately ... Then something earth-shattering occurred. A giant wound opened up between ...

Today, there are only two sloth species, but historically ... The largest sloths, in the genus Megatherium, were about the size of Asian bull elephants and weighed roughly 8,000 pounds.

Alberto Boscaini The skeleton of Megatherium americanum, an extinct species of giant ground sloth, in Museo Argentino de Ciencias Naturales in Buenos Aires, Argentina The researchers say it is a ...