Call of the Wild Crossword

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Across
  1. 3. Difficult and tiring
  2. 5. Send off to a destination
  3. 6. Lean and haggard
  4. 7. Make someone less hostile
  5. 9. Feelings of anxiety
  6. 11. Causing public shame
  7. 12. A unusual habit
  8. 14. Outbursts of energy
  9. 16. Left in peace
  10. 17. In a moment
  11. 18. Absolutely necessary
Down
  1. 1. Skill or expertise
  2. 2. Extremely hungry
  3. 4. Exaggerate illness in order to escape work
  4. 5. Without comfort
  5. 8. Critical or demanding
  6. 10. Important
  7. 13. A desire to achieve something
  8. 15. Never ending or changing