the best crossword ever like cmon

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Across
  1. 2. feel, hear, see something
  2. 6. when you increase in size
  3. 8. breathing
  4. 9. small arthropod animal
  5. 12. comes out of you
  6. 13. breeding
Down
  1. 1. something without a spine
  2. 3. invertabrate animals
  3. 4. when you change your position by walking or etc.
  4. 5. when you ear
  5. 7. crabs
  6. 10. millipede
  7. 11. spiders