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 ...

Among the greatest mysteries of the tropical rainforest are the pooping habits of sloths. Really. Those furry, slow-moving tree dwellers almost never descend from the safety of the tree tops—except ...

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 always have a slight smile on their lips, making them appear friendly and cute. These incredibly slow tree dwellers naturally inhabit the tropical rainforests of Central and South America, ...