Fish
Fish are cold blooded animals and they live in water. They have got scales and FINS. They haven't got lungs. They have got gills instead. Most fish lay eggs and they don't look after their babies.
Amphibians
When amphibians are young, they live in water and they haven't got lungs. When they are adult, they've got lungs and four- LEGS, for example, frogs and toads. They lay their eggs in water, but they don't live in water all the time. Mammals
All mammals are warm-blooded and they feed their babies milk. Most mammals live on land, for example, humans and dogs. Some mammals, like whales, live in water, but they haven't got gills. They have all got LUNGS. Most of them have got hair and four legs.
Reptiles
Most reptiles live on land. They have got lungs and scales, but not gills. They haven't got any wings or feathers, and they haven't got fins or SCALES. All the animals in this group, for example, chameleons and lizards, have got four legs, except for snakes. They are cold blooded animals and many of them live in warm places.
Birds
Birds live on land, but some of them look for food in water. They have got two legs and two wings. Some birds like ostriches and kiwis can't fly. All birds lay eggs and they feed their young with MEALS.
