| A | B |
|---|
| Bird | An animal that has wings and a body covered with feathers. |
| Vertebrates | Having a backbone. |
| Cold-blooded | Having blood that changes in temperature with the temperature of the surrounding air or water. |
| Mammal | An animal that is covered with fur and is warm-blooded. It produces milk for its young. |
| Habitat | The place where an animal lives. |
| Fish | An animal that lives in the water. It has gills and scales. It is also cold-blooded. |
| Amphibians | A group of cold-blooded animals with backbones and smooth moist skin. They live both on land and in the water. |
| Reptile | A cold-blooded animal that has a backbone and has dry, scaly skin. It moves by crawling on its stomach or creeping on short legs. |
| Warm-blooded | Having blood that stays at almost the same temperature even when the temperature of the air or water changes. |
