Communication between animals

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Across
  1. 2. the sound whales use to navigate
  2. 5. what do whales communicate for?
  3. 7. what do cats communicate to show?
Down
  1. 1. rodent's theet grinding togheter
  2. 3. purpose of bird communication
  3. 4. main way cats communicate
  4. 6. rodents communicate to make their...