Genetic clues may help explain why sloths live at such a low gear. In a new study, researchers linked the animals' extremely ...

Deep within tropical forests, sloths move at a pace that seems almost frozen in time. Their slow movements, low energy use, ...

A genome analysis revealed sloth-specific transposable elements conserved for millions of years that may help explain the species’ low metabolism, unique adaptations, and longevity-related biology.

Amid the non-stop buzz of the jungle, the sloth uses a very unorthodox tactic. Rather than rushing around, using speed and agility to outdo rivals in a hyper-competitive environment, it slows things ...

Sloths are known for moving slowly — even the word “sloth” by definition refers to someone who’s lazy or reluctant to make a move. In nature, though, sloths might seem lazy because they’re always in ...

"Sloth cell lines may offer a natural model for understanding how organisms cope with low-energy states, and what goes wrong ...