Contrary to their sluggish land image, sloths are surprisingly adept swimmers, moving up to three times faster in water.

Scientists have analyzed ancient DNA and compared more than 400 fossils from 17 natural history museums to figure out how and why extinct sloths got so big. Most of us are familiar sloths, the ...

Sloths appear to have life figured out, and once the details are revealed, being envious makes sense. These tree-dwelling mammals have survived for millions of years by doing things their own way, and ...

Sloths move slowly as a survival tactic. This conserves their energy and helps them hide from predators. Their diet of leaves ...