Explanation

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Across
  1. 5. Marvel's newest movie
  2. 6. Man's best friend
  3. 7. What animal is from Australia?
  4. 8. What animal is Batman based on?
Down
  1. 1. What animal has a trunk
  2. 2. Jack Black
  3. 3. Likes to chase mice
  4. 4. An animal that flies.