Across
- 9. animals that haven't got a backbone
- 10. the biggest group of invertebrates
- 12. mammals that are oviparous
- 13. starfish are...
- 14. animals that give birth to live babies
- 15. turtles and some gastropods have got one for protection
Down
- 1. skeleton outside the body
- 2. have got a large head with tentacles
- 3. protect the body of reptiles and fish
- 4. have got 2 claws and most are red
- 5. when baby frogs change into adults
- 6. have got 2 eyes on the end of antennae
- 7. birds have different types depending on the food they eat
- 8. the only mammal that can fly
- 11. arthropod that has got lots of legs