If large creatures like elephants, giraffes and bison are allowed to thrive, they could alter habitats that allow for the rise of other giants ...

Many thousands of years ago, the Sarasota-Manatee area was home to a diverse mix of now-extinct mammals—most notably, saber-tooth cats, mastodons and giant ground sloths called Megatherium, which ...

The giant ground sloth was given its scientific name, Megalonyx jeffersonii, by Jefferson, the US’s third president, in 1797 after some fossils belonging to the extinct beast were found in a ...

The bulk that kept giant sloths warm and saved them from local predators made them a target of Earth's most voracious predator: us. Their numbers dropped off massively once humans arrived in North ...

“We know we’ve found Giant Ground Sloth by its distinctive tooth,” said Chris Ringstaff, project planner with TxDOT’s environmental affairs division. “We’re here to get the road built.

Scientists have uncovered evidence of ancient humans engaged in a deadly face-off with a giant sloth, showing for the first time how our ancestors might have tackled such a formidable prey.

Thaís Pansani holding a giant sloth rib bone from central Brazil, thought to be burned by human fire about 13,000 to 15,000 years ago, in Smithsonian’s collection AP ...

A giant stuffed sloth lived in a tree off Interstate 5 (I-5) near Lake Samish. He is called “Slothy.” The Washington Department of Transportation (WSDOT) does not know who put him there.

“We know we’ve found Giant Ground Sloth by its distinctive tooth,” said Chris Ringstaff, project planner with TxDOT’s environmental affairs division. “We’re here to get the road built.

“We know we’ve found Giant Ground Sloth by its distinctive tooth,” said Chris Ringstaff, project planner with TxDOT’s environmental affairs division. “We’re here to get the road built.