Animals and us

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Across
  1. 1. living or growing in the natural environment
  2. 4. a person who trains people or animals
  3. 6. cause to feel extreme fear
  4. 7. open and produce a young animal
  5. 9. a structure or place made or chosen by a bird for laying eggs and sheltering its young
  6. 10. the mouth, including the teeth
  7. 11. protected from or not exposed to danger or risk; not likely to be harmed or lost
  8. 12. having or showing a mild, kind, or tender temperament or character
Down
  1. 2. go away from
  2. 3. at or to the far side of
  3. 5. an animal, as distinct from a human being
  4. 6. teach (a person or animal) a particular skill or type of behaviour through practice and instruction over a period of time
  5. 8. behaving in an angry and violent