IDK

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Across
  1. 3. Man's best friend
  2. 5. Large marsupial
  3. 8. Has a trunk
  4. 9. I like this class
Down
  1. 1. Large marsupial
  2. 2. Has a trunk
  3. 4. Likes to chase mice
  4. 6. My friend
  5. 7. Flying mammal