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

An analysis of the sloth family tree suggests three different groups of the animals evolved to gigantic sizes in response to ...

A prehistoric discovery near Hays is shedding some new light on a giant ground sloth species that lived more than 10,000 years ago.

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 ...

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

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

Officials discovered the remains of a giant ground sloth and other prehistoric animals near Lubbock while working on a new highway. The Texas Department of Transportation contracted an ...

Sloths appeared sometime in the Late Eocene Epoch, around 35 million years ago. The animals evolved largely ... Pampas region of Argentina did turn up giant ground sloth bones bearing cut marks ...

A photo of a fossil of Megalonyx, a megatherioid ground sloth from North America, on display at the American Museum of Natural History. (Image Credit: AMNH/D. Finnin) Sloths once came in a variety of ...

Squeaky stuffed animals are endearing. But when the animal is a real baby bird and its stomach makes crunching noises from all the plastic it has ingested, the endearment quickly turns into a ...

If you’ve got this colorful little guy stuffed in your attic somewhere, run, do not walk.