Vertebrates Vertebrates are animals with backbones. The followinggroups are the different types of vertebrates.FishFish are cold blooded animalsand they live in water. They havegot scales and '_. They haven'tgot lungs. They have got gillsinstead. Most fish lay eggs andthey don't look after their babies.AmphibiansWhen amphibiansare young, they live inwater and they haven'tgot lungs. When they areadult, they've got lungs andfour 4_, for example, frogsand toads. They lay their eggs in water, but they don't live in water all the time.MammalsAll mammals are warm-blooded and theyfeed their babies milk. Most mammals live onland, for example, humans and dogs. Somemammals, like whales, live in water, but theyhaven't got gills. They have all got 2_.Most of them have got hair andfour legs.ReptilesMost reptiles live on land. They have gotlungs and scales, but not gills. They haven'tgot any wings or feathers, and they haven't gotfins or 5 _. All the animals in this group, forexample, chameleons and lizards, have got fourlegs, except for snakes. They are cold-bloodedanimals and many of them live in warm places.BirdsBirds live on land, but some of them look forfood in water. They have got }_, two legs andtwo wings. Some birds like ostriches and kiwiscan't fly. All birds lay eggs and theyfeed their young.​