1. Reptiles

2. Gastropods

3. Crustaceans

4. Birds

5. Amphibians

6. Arthropods

7. Mammals

8. Give birth to live young Have hair or fur Mothers nurse young with milk Warm-blooded Have lungs and need air to breathe

9. Have scales not fur Dry skin Usually lay eggs Cold-blooded Ear holes instead of ears Four legs or no legs

10. Have feathers and wings Lay eggs Warm-blooded Have two legs Ear holes instead of ears

11. Live on land and in water Webbed feet Breathe with lungs and gills Moist smooth skin (no fur or hair) Four legs Lay many eggs

12. Exoskeleton Three-part body Three pairs of jointed legs Compound eyes One pair of antennae

13. Gills Swimming legs Exoskeleton Compound eye One pair of antennae Three part body

14. Shell Tentacle Eye Breathes air with lung Has mucous (slime)

15. Vertebrate Invertebrate Vertebrate Invertebrate Vertebrate Invertebrate Vertebrate Invertebrate Vertebrate Invertebrate Vertebrate Invertebrate