animal classification

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Across
  1. 3. mammal that lives in water
  2. 4. bird that can't fly
  3. 7. land animal cheetah
  4. 8. flying mammal
  5. 9. fish breathe with this method
Down
  1. 1. group of animal with 6 legs
  2. 2. Group of animal with moist skin
  3. 5. mammal that lays egg.
  4. 6. group of animal that has dry scales
  5. 9. fish that gives birth