Giant sloths used to roam all over North America. Over 10 times bigger than today’s sloths, many lived on the ground instead of in the trees and their closest living relatives are actually ...

French photographer Emmanuel Tardy's image of a sloth clinging to a post in Costa Rica is one of the images from the 2025 ...

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

A fossil of the extinct ground sloth, Megalonyx jeffersonii, was found in Ellis County, Kansas, offering new insight into its presence in the Great Plains.

Scientists have analyzed ancient DNA and compared more than 400 fossils from 17 natural history museums to figure out how and why extinct sloths got so big.

A Manatee County utilities crew digging a trench for a waterline discovered a fossilized claw from a Jefferson’s ground sloth. The fossil dates back to more than 11,000 years ago. The fossil ...

A fossil of the extinct ground sloth, Megalonyx jeffersonii, was found in Ellis County, Kansas, offering new insight into its presence in the Great Plains.

A fossil of the extinct ground sloth, Megalonyx jeffersonii, was found in Ellis County, Kansas, offering new insight into its presence in the Great Plains.

In one shot, a lioness peers over the edge of a rock and faces down a cobra; in another, a sloth hugs the post of a barbed ...

A fossil of the extinct ground sloth, Megalonyx jeffersonii, was found in Ellis County, Kansas, offering new insight into its presence in the Great Plains.

A fossil of the extinct ground sloth, Megalonyx jeffersonii, was found in Ellis County, Kansas, offering new insight into its presence in the Great Plains.

A fossil of the extinct ground sloth, Megalonyx jeffersonii, was found in Ellis County, Kansas, offering new insight into its presence in the Great Plains.