| A | B |
|---|
| Vertebrates | animals with backbones |
| Invertebrates | animals without backbones |
| Reptiles | dry skin with scales and lay eggs |
| Amphibia | moist or wet skin and lay their eggs in water |
| Mammals | they have fur and feed their young on milk |
| Arthropods | they have legs, antennae or feelers and a hard outer body |
| Fish | live in water, breathe through gills and have scales |
| Molluscs | have soft bodies and move on a slimy foot. Some have shells |
