Imagine a sloth. You probably picture a medium-sized, tree-dwelling creature hanging from a branch. Today's sloths—commonly featured on children's backpacks, stationery and lunch boxes—are slow-moving ...

Sloths may look defenseless, but their biology is unlike almost anything else in the animal kingdom. Moving at just 15 feet ...

Sloths are famous for moving slowly, but that extreme pace has unexpected biological consequences. Because they spend so much time nearly motionless, algae can grow directly in their fur, turning the ...

Sloths are the slowest mammals on the planet, but living in dense jungles has made them notoriously difficult to study. For the first time, scientists have now sequenced and analyzed the two-toed ...

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

Photo via Toucan Rescue Ranch. Sloths are some of the most interesting animals to have ever graced the earth, and yet they remain quite the unknowable little critters. The group that contains sloths, ...

While humans wouldn't be very happy to find that organisms were growing on their skin, particularly fungi, algae, and insects, it works out pretty well for sloths. Sloths may be hosting entire ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Imagine a sloth. You probably picture a medium-size, tree-dwelling creature hanging ...