What animal am I?

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Across
  1. 4. Has a pouch
  2. 6. Associated with Thanksgiving
  3. 7. Loves nuts
  4. 9. Flying mammal
  5. 10. Man's best friend
Down
  1. 1. Has a trunk
  2. 2. Likes to chase mice
  3. 3. Related to a sheep, but has horns
  4. 5. Has a long neck
  5. 7. Slithers
  6. 8. Roars