Sloths are the slow-moving mammals. They use their long claws to hang onto branches while they feast on the leaves that other animals can’t reach. They spend most of the time in tree. Sloths can swim 3 times faster than they can move on land and can hold their breath for up to 40 minutes. They live solo lives. Sloths sleep from 15 to 20 hours per day, which can leave them very little time for social activities. Sloths in the wild, though, sleep about as much as humans. Sloths have a four-part stomach that very slowly digests the tough leaves they eat. Digesting this diet means a sloth has very little energy left to move around making it one of the slowest moving animals in the world.