| A | B |
| mammals | Their bodies are covered by hair. Many eat plants and meat. They give milk to their young. |
| birds | These animals are covered by feathers. They have wings and beaks. |
| insects | These animals have six legs. Many have wings and can fly. |
| fish | These animals' bodies are covered by scales. They live in the water. |
| amphibians | They live part of their lives in the water and the other part on land. Their skin is smooth and moist. |
| reptiles | Their skin is rough and dry. They also hatch from eggs. |