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 ...

Conservation biologist Rebecca Cliffe fits an accelerometer backpack to a wild three-fingered sloth to measure its movement. The Sloth Conservation Foundation, CC BY-NC-ND Sloths are more vulnerable ...

Defecating exposes sloths to predators on the jungle floor. An unexpected ally benefits, and returns the favor. A brown-throated three-toed sloth peers over a tree's buttress root while defecating on ...