Ancient sloths lived in trees, on mountains, in deserts, boreal forests and open savannahs. These differences in habitat are primarily what drove the wide difference in size between sloth species.

He “realized he had been looking for a ghost, a unicorn, an animal that had been extinct for thousands of years. It was Mylodon.” Gigantic sloth, extinct mammal of the Pleistocene Epoch, drawing ...

WICHITA, Kan. (KWCH) - 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 study published Monday in the peer-reviewed ...

Massive Megatherium sloths once stood as large as Asian elephants, ripping foliage off treetops with prehensile tongues like today's giraffes. "They looked like grizzly bears but five times larger," ...

Each year 500,000 people visit New Mexico's White Sands National Monument to hike and frolic among gypsum dunes. Aside from the tourists, few animals in the region get much larger than a coyote or ...

Bones from an extinct ground sloth that stood between 8 and 10 feet tall were found in Kansas. Photo from the Illinois State Museum. At the end of the Pleistocene Epoch, 2.6 million to 11,700 years ...

Sloths, the famously slow-moving yet adorable creatures native to Central and South America, could face extinction by the end of the century due to climate change. Researchers investigating how sloths ...

New research painted a more accurate picture of the megafauna that spread widely around the Americas before they went extinct. By Jeanne Timmons Ground sloths emerged in South America tens of million ...

Sloth in prison -- The Great Basin now and then -- A zoologically impoverished world -- Dating an ass -- A stable of ground sloths -- Extinct mammals, dangerous plants, and the early peoples of the ...

Deep in the unyielding darkness of a Brazilian cave, a pale, blind, spiny beast carefully feels its way across rust-colored rocks. Meet Paleotoca diminas, a spider new to science. The species, ...