This video reveals why sloths move so slowly that algae is able to grow directly on their fur. Viewers learn how this ...

Modern sloths hang out in trees, move at a slow pace and eat a vegetarian diet -- but the same thing can't be said for their extinct relative, Mylodon. This ancient ground sloth, which lived in South ...

The Tulsa Zoo is home to thousands of animals, but some of the most popular residents may be harder to spot during a visit.