Animal Classification

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Across
  1. 2. uses gills to breathe
  2. 6. has wings and feathers
  3. 7. has damp skin, lays eggs
  4. 9. resting in the winter
  5. 10. has backbone
  6. 11. cold-blooded, lives on land
  7. 12. one of the groups of invertebrates
Down
  1. 1. smallest classification group
  2. 3. no backbone
  3. 4. fly to a warmer or cooler climate
  4. 5. one of the groups of invertebrates
  5. 7. jointed legs
  6. 8. gives live birth, has fur
  7. 13. largest classification group