Sloths are slow-moving critters that belong to the Xenarthra order of mammals. They are found in the tropical rainforests of Central and South America, where they spend most of their time in the trees. Sloths have a slow metabolism and move very slowly, making them easy prey for predators. They have long, curved claws that help them hang onto branches and climb trees. Sloths also have a thick fur coat that helps them stay warm and camouflaged in their environment.