Sloths weren’t always the slow, tree-hugging creatures we know today. For millions of years, they came in a wild variety of ...

The exhibit has life-size fossil replicas, interactive displays, and education panels for all dinosaur fans and age groups.

New research shows 8,000-pound sloths once dug caves, adapted to oceans, and roamed widely—until climate and humans brought ...

An exhibition featuring skeletons and models of giant prehistoric animals is heading to Birmingham and Edinburgh early next ...

The animal kingdom boasts creatures that prioritize relaxation. From the unhurried cuckoos and bamboo-munching pandas to the ...

But as the planet cooled again, sloths began to bulk up. The largest ground sloths emerged during the Ice Ages. Big bodies ...

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, ...

Giant sloths used to roam all over North America ... and whether they were climbers or walkers. Since sloth size was a major question, they measured museum fossils to estimate the sloth weight.

A new fossil and DNA analysis traces how dozens of sloth species responded to climate shifts and humans. Just two small tree-dwelling sloths remain today.