Vertebrates include: Mammals Birds Fish Reptiles Amphibians
Mammals Hair or fur (to keep warm) Ex. Polar bear Lungs (to breathe in oxygen) Ex. Whales Give birth to babies. (Parents take care of the baby, until it can live alone) Feed their babies milk.
Birds Feathers Wings (to help them fly) Penguins have wings but cannot fly. Two legs Lungs (to breathe oxygen from the air) Lay eggs
Penguin
Reptiles Dry skin Skin is covered with scales (thin flat plates to protect the animal) Lungs (reptiles that spend lots of time in water go to the surface to breathe oxygen) Some lay eggs, some give birth.
Crocodile Scales
Eggs have tough, leathery shells.
Fish Live their whole life in water Gills Skin covered with scales Most lay eggs, Some give birth
Amphibians Lay eggs in water Moist skin Young live in water. Adult live on land