New research painted a more accurate picture of the megafauna that spread widely around the Americas before they went extinct.

The extinct giant ground sloths were some of the only mammals that had digestive systems large enough to process the huge avocado seeds whole. They feasted on the fruit and then dispersed the ...

Four of these were species of ground sloth, three of which unknown to science.. Sloths are notable for their low energy levels and slow, deliberate movements (hence their name). They are part of a ...

On Wednesday, the Santa Cruz Museum of Natural History announced that it's now in possession of a prehistoric left arm bone belonging to a Jefferson’s ground sloth (Megalonyx jeffersonii ...

Some of the most tantalizing clues come from an archaeological site in central Brazil, called Santa Elina, where bones of ...

Nearly 27,000 years ago, a giant ground sloth traveled across a barren, arid landscape in what is now Belize, munching on grassy vegetation and searching for water. A nearby sinkhole may have ...

Experts fear that the rare and elusive species may be dying of some disease, suspected to be African swine fever.

The sloth presented a visual distraction to drivers and a safety risk if it fell from the tree and into the travel lanes. (WSDOT photo) TOPICS: BELLINGHAM, Wash. — The Washington State ...