Fun crossword

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Across
  1. 2. the 8th planet away from the sun
  2. 3. you sharpen it and it gets shorter
  3. 5. Korean board game
  4. 9. an imaginary line about which a body rotates
  5. 10. it is a type of gas we breath
  6. 12. bloom in spring
  7. 13. is the largest whale
Down
  1. 1. pops when you touch it
  2. 4. purrs and likes fish
  3. 6. most likely pet someone can have
  4. 7. Australian animal
  5. 8. popcorn and big screen
  6. 11. something we can't have twice