Animals

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Across
  1. 2. Group of crows
  2. 4. Lives in land and water
  3. 9. Seasonal movement
  4. 12. Eight-armed
  5. 14. Hard outer layer
  6. 15. Home of Bears
  7. 16. Tallest land animal
  8. 19. Night active
Down
  1. 1. Deep winter sleep
  2. 3. Risk of extinction
  3. 5. Marsupial with a pouch; hops
  4. 6. To disguise into surroundings
  5. 7. "King of the Jungle"
  6. 8. Sharp claws of a predatory bird
  7. 9. Warm blooded; fur/hair bearing
  8. 10. Bones on the head
  9. 11. Long hairs; located near an animals mouth
  10. 13. Flightless bird; Cold Climates
  11. 17. Group of birds
  12. 18. Helps in swimming