Sloths may seem like quirky tree-dwellers today, but their past reveals a dynasty of giants that once roamed the Americas.

Sloths can take as long as one minute to move just 12 inches. It seems like a chill existence, until you consider what a glacial pace means for their pooping habits.

Sloths weren't always slow-moving, furry tree-dwellers. Their prehistoric ancestors were huge — up to 4 tons (3.6 metric tons) — and when startled, they brandished immense claws.Video above: ...

The little one, who weighs only two pounds, got its name from its mom, Beanie, who became pregnant while at Rhode ...

Ancient sloths lived in trees, on mountains, in deserts, boreal forests and open savannahs. These differences in habitat are primarily what drove the wide difference in size between sloth species.

Today, sloths are slow-moving, tree-dwelling creatures that live in Central and South America and can grow up to 2.5 feet long. Thousands of years ago, however, some sloths walked along the ground, ...

Zookeepers at Elmwood Park Zoo are celebrating their newest star, a one-month-old sloth born to their beloved resident, Beanie.

A Pennsylvania zoo’s newest star, a one-month-old sloth, will soon make its debut to the public. The Elmwood Park Zoo, ...