Huge tunnels under southern Brazil and northern Argentina were potentially made by giant, Ice Age sloths for refuge and rest ...

Beneath the rolling hills of southern Brazil and northern Argentina, an extraordinary discovery has stunned scientists: giant ...

Although it sounds like a grade-B science fiction movie, fossils show that our ancestors once hunted and fought giant ground sloths. For the first time, scientists have uncovered fossilized footprints ...

For a listing and recovery biologist, it was just a regular day. United States Fish and Wildlife Service's Luke Pearson was recently doing field research in Northeast Mississippi on a species of ...

This uplifting post from discover.animal shows some good Samaritans helping a lucky sloth make its way across traffic and into the forest. Sloths are typically docile and are rarely a danger to people ...

Sloths weren’t always sleepy tree-dwellers. In the Ice Age, they grew to the size of elephants and defended themselves with razor-sharp claws. These overpowered giants once dominated landscapes before ...