Vertebrates

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Across
  1. 8. Animals without a backbone
  2. 9. fish use these to breath
  3. 10. kind of animal that has gills as a baby and lungs as an adult
  4. 13. Animals that eat other animals
  5. 15. A bird's body is covered in these
  6. 16. Mammals use these to breath
  7. 17. Kind of animal that lives in the water
Down
  1. 1. Animals that eat plants and other animals
  2. 2. Some birds sit on their eggs to keep them warm
  3. 3. Most mammals have four of these
  4. 4. fish use these to swim
  5. 5. The mouth of a bird
  6. 6. a reptiles body is covered in these
  7. 7. Animals that only eat plants
  8. 11. A kind of animal that is usually covered in fur and has four limbs
  9. 12. kind of animals that can be found on land and are covered in hard scales
  10. 14. Animals with a backbone