This video reveals why sloths move so slowly that algae is able to grow directly on their fur. Viewers learn how this surprising relationship helps camouflage the animals and support tiny organisms ...

When it comes to physical activity, few animals have as maligned a reputation as the sloth. The six sloth species, which call Brazil and Panama home, move with no urgency, having seemingly adapted to ...

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 ...

Discover the world of ancient giant ground sloths, from their vast habitats across the Americas to their unique diets and the mystery of their extinction. Sloths live in perpetual slow motion in the ...

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 ...