To that end, sloths have picked up a couple of useful adaptations. First, they're covered in a unique sort of fur that's an ideal breeding ground for algae. Second, they're able to spend most daylight hours immobile and, when they do move, it's usually very, very slowly. The result: From the air, sloths look more like green vegetation than tasty, meaty eagle snack.
Learn more about sloths at Boing Boing. Link
(image credit: flickrfavorites)
PS: Happy anniversary to Boing Boing, celebrating ten years of blogging!