Imagine a sloth. You probably picture a medium-sized, tree-dwelling creature hanging from a branch. Today's sloths—commonly ...

Every October 20, the world slows down (at least in spirit) for International Sloth Day. It’s the perfect excuse to celebrate ...

Giant sloths with razor-sharp claws and as large as Asian bull elephants once roamed the Earth, snacking on leaves at the tops of trees with a prehensile tongue. Now, scientists have figured out why ...

Sloths show that slow living sustains nature. Protecting them means preserving the balance of forests. Their story teaches ...

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," ...

Long before today's tree-dwelling sloths became icons of leisure, their ancestors roamed the ground as colossal herbivores.

Apple TV today released a first-look clip from the new season of the award-winning natural history series Prehistoric Planet: ...

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.

The extinction of the Pleistocene megafauna may be people’s fault after all, according to a recent study.

Some Fossil Sloths Were the Size of Elephants Credit: Canva Ancient, giant ground sloths roamed the Americas. Some reached the size of modern elephants and lived alongside early humans. Though extinct ...