Sloths appear to have life figured out, and once the details are revealed, being envious makes sense. These tree-dwelling mammals have survived for millions of years by doing things their own way, and ...

Defecating exposes sloths to predators on the jungle floor. An unexpected ally benefits, and returns the favor. A brown-throated three-toed sloth peers over a tree's buttress root while defecating on ...

When it comes to slow motion, some creatures have truly perfected the art of moving at a crawl. Among the top contenders are the three-toed sloth, the Galápagos tortoise, and the banana slug, each ...