Sloths once came in a variety of sizes and lived in multiple settings in many parts of the world. A study in the journal Science examined sloth evolution over the past 35 million years, investigated ...

Ancient sloths ranged in size from tiny climbers to ground-dwelling giants. Now, researchers report this body size diversity was largely shaped by sloths’ habitats, and that these animals’ precipitous ...

Although it sounds like a grade-B science fiction movie, fossils show that our ancestors once hunted and fought giant ground sloths. For the first time, scientists have uncovered fossilized footprints ...

Giant sloths with razor-sharp claws and as large as Asian bull elephants once roamed the Earth, snacking on leaves at the tops of trees with a prehensile tongue. Now, scientists have figured out why ...

Sloths are the ideal representation of calm: slow-moving, sleepy, and perfectly at ease in the treetops. But life in the wild is never as peaceful as it seems and sloths are part of the ongoing food ...

Hanging out in a rain forest, rarely coming down from the verdant  canopy where they are safe from predators; moving slowly, ...

Sloths are slow-moving, arboreal mammals living in Central and South America. The two types of sloths are the two-toed sloth and the three-toed sloth. Three-toed sloths are strictly herbivorous, while ...