ANIMALS

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Across
  1. 3. animals without backbones
  2. 7. vertebrates that can live both on land and in water
  3. 8. animals with backbones
  4. 10. warm-blooded animals
  5. 12. vertebrates with thick skin
Down
  1. 1. feed its cub with milk
  2. 2. body covering of mammals
  3. 4. made up of many cells
  4. 5. an internal skeleton
  5. 6. vertebrates with two legs
  6. 9. an example of a mammal
  7. 11. vertebrate that lives in the water