easy questions

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Across
  1. 3. A bird that lives in ice?
  2. 4. Large marsupial
  3. 6. Flying mammal
  4. 7. Likes to chase mice
  5. 8. Biggest planet in soler system?
Down
  1. 1. Has a trunk
  2. 2. Man's best friend
  3. 5. A bird that cannot fly?