animal science

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Across
  1. 3. the forth part of the estrous cycle
  2. 7. the second part of the estrous cycle
  3. 9. the act of giving birth
  4. 10. producing an exact genetic copy of an organisms
  5. 14. difficulty giving birth
  6. 16. the third part of the estrous cycle
  7. 17. obtains oxygen and get rid of carbon dioxide
  8. 18. mating related animals
Down
  1. 1. circulates blood caring oxygen through the body
  2. 2. provides movement to the skeleton
  3. 4. provides structure, support and protection
  4. 5. heat
  5. 6. stage 1 of parturition
  6. 8. stage 2 of parturition
  7. 11. mating closely related animals
  8. 12. length of pregnancy
  9. 13. the cycle of reproduction
  10. 15. mating animals of different breeds