Gender specific nouns.

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Across
  1. 2. Female ruler's title
  2. 4. Young female horse
  3. 5. Adult female horse
  4. 6. Adult male cattle
  5. 7. Adult female sheep
  6. 8. Adult female cattle
Down
  1. 1. Male duck
  2. 2. Male ruler's title
  3. 3. Adult male horse