The sloth is the world’s slowest mammal. Sloths are tree-dwelling animals, which hang from the branches with a powerful grip aided by their long claws. They move through the canopy at a rate of about 40 yards per day, munching on fruits, leaves, twigs and buds. Sloths even sleep in trees – they spend 15 to 20 hours per day sleeping! Surprisingly, they are excellent swimmers and occasionally drop from their treetop perches into water for a paddle.