Rio

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Across
  1. 3. a structure of bars used to confine animals
  2. 4. a group of living organisms
  3. 7. an exciting or unusual experience
  4. 10. the state of being confined or imprisoned
  5. 12. a person who illegally transports goods or animals
  6. 15. tamed and kept by humans
  7. 16. a natural or automatic behavior or reaction
  8. 18. drool or saliva that drips from the mouth
Down
  1. 1. a public procession, often part of a celebration
  2. 2. the natural environment of an animal or plant
  3. 5. at risk of becoming extinct
  4. 6. a dense forest in a tropical region
  5. 8. the bad or evil character in a story
  6. 9. a scientist who studies birds
  7. 11. incapable of flying
  8. 13. metal links used to restrain or secure
  9. 14. a festival with music, dancing, and costumes in Brazil
  10. 17. the state of being free, not imprisoned or restricted