New research painted a more accurate picture of the megafauna that spread widely around the Americas before they went extinct ...

Sloths have been around before dinosaurs -- over 65 million years. Giant sloths the size of elephants used to exist, but they are now extinct. Sloths are 3 times stronger than humans. Free ...

The sloth is the world's slowest mammal, so sedentary that algae grows on its furry coat. The plant gives it a greenish tint that is useful camouflage in the trees of its Central and South ...

Annie Marie Musselman Nursing a helpless baby sloth, which weighs only 10 or 11 ounces—about the size of a grapefruit—requires almost constant attention for several months. Infants are fed ...