Animal Classification

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Across
  1. 2. Vertebrates have this.
  2. 4. an example of birds
  3. 7. an example of mammals
  4. 8. The legs of arthropods have several ---.
  5. 10. Amphibians have --- skin.
  6. 11. The skin of reptiles is dry and ---.
  7. 12. Fish live their whole lives in ---.
Down
  1. 1. the largest group of arthropods
  2. 3. vertebrates with feathers
  3. 5. How many groups are animals divided into?
  4. 6. animals without backbones
  5. 9. an example of amphibians