people who do things

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Across
  1. 3. doctor for children
  2. 5. someone who is devoted to animals
  3. 7. someone who works with reptiles
  4. 8. someone who studies the body
  5. 10. someone who deals with insects
  6. 12. someone who collects butterflies & moths
  7. 14. someone that sleepwalkes
Down
  1. 1. someone who deals with astronomy
  2. 2. designer of crossword puzzels
  3. 3. someone who thinks of the worst
  4. 4. someone who deals with weather& climate
  5. 6. someone who holds the belief or doctrine
  6. 9. a person who likes cats
  7. 11. the collecting of banknotes
  8. 13. someone who explores caves (hobby)