Land Animals Land animals have four limbs. Some use all four limbs to walk, run or jump while some use only hind limbs, e.g. kangaroo. Snakes, lizards, crocodile move by crawling, but they do have limbs. Snakes do not have legs. They have fins, webbed feet and paddle-like limbs.
Birds have wings, which help in flying.
Insects Some insects have one or two pairs of wings for flying e.g. butterfly. The wings are different from those of birds, as they have no feathers. They are made of tiny colored scales. Some have six legs for movement, e.g. cockroaches and ants. Grasshoppers use hind legs.