Across
- 1. removal of female reproductive organs
- 5. when a female is receptive to be bred
- 6. the act of giving birth
- 9. period of time that milk is secreted by the mammary glands
- 10. creating offspring.
- 11. process by which an embryo develops within the egg under favorable environmental conditions.
Down
- 2. the period of time that an animal is pregnant
- 3. animals reach sexual maturity and are able to reproduce
- 4. the union of the sperm + egg cells
- 7. the release of the egg from the ovary
- 8. removal of testicles of the male to prevent breeding