symptoms of the black plague in animals

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Across
  1. 5. what this crossword is about
  2. 7. rarely catch the plague
  3. 8. black____, they spread the plague along with fleas
  4. 9. the animal that can easily catch the plague
Down
  1. 1. an animal that can catch the plague that hops
  2. 2. the plague spreaders
  3. 3. weird animals that can catch the plague
  4. 4. have the same symptoms as people
  5. 6. how the cattle population decreased