anatomy crossword

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Across
  1. 2. they eat through the _ _ _ _ _
  2. 4. pigs have four of these and walk on them
  3. 6. they can smell out of these
Down
  1. 1. they are on the bottom of the legs and are brown or black
  2. 3. it is at the end of the pig
  3. 5. they have two of these and can see out of them