guess that thing

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Across
  1. 5. 6 legs
  2. 6. many legs
  3. 8. comes out you skin
  4. 10. you breath
  5. 11. gain height
  6. 12. react
Down
  1. 1. you eat
  2. 2. claw
  3. 3. offspring
  4. 4. groupe of animales
  5. 7. you move
  6. 9. 8 legs
  7. 13. no spine