Sloths appear to have life figured out, and once the details are revealed, being envious makes sense. These tree-dwelling ...

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 ...

The National Zoo has welcomed two newborn sloth bear cubs. The cubs are healthy and will remain off exhibit until spring 2026 ...