They may look like a cross between a monkey and a teddy bear, but sloths are actually most closely related to ant eaters! Their sluggish, yet smiley appearance may have something to do with the fact that they get to sleep for up to 20 hours per day. Natural tree dwellers, these baby sloths in the Sloth Sanctuary in Costa Rica are getting to grips with a jungle gym. The center is dedicated to the rescue, rehabilitation and release of sloths. Credit: YouTube/TWD Industries