Ground sloths occupied South America during the last ice age before going extinct 10,000 years ago. Scientists thought these giant creatures ate plants like their modern, tree-climbing counterparts.

Sloths appear to have life figured out, and once the details are revealed, being envious makes sense. These tree-dwelling ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Modern sloths hang ...

Giant ground sloths have often been portrayed as gentle giants of the ice age. Much of their anatomy, from their flat molars to their vat-like guts, seems consistent with a diet centered around the ...

The dictionary defines “sloth” as “laziness”. It makes some sense then, that the slowest moving mammal in the world would end up with this name. However, another way to look at it is that sloths make ...

Sloths are known for their slow and sleepy nature. These cute mammals, which spend most of their time upside down, can be found in the trees of South America and Central America. These mellow-looking ...

For International Sloth Day, learn about the scientific clues preserved in petrified poop Jack Tamisiea Several large chunks of fossilized poop that prehistoric ground sloths left in an Arizona cave ...