Sloths have grey fur that helps them camouflage in trees, where they spend nearly all their time sleeping upside down in tight balls or hanging from branches. They live in trees from infancy, clinging to their mothers for the first nine months. As herbivores, sloths eat leaves, flowers and shoots but do not need to eat or drink much due to their sedentary lifestyle. They are slow-moving mammals known for harboring bugs in their fur and instinctively swimming if they fall into rivers.