Across
- 1. the time a female animal is receptive to be bred also called heat
- 4. act of ging birth in all different animals
- 5. union of the sperm and egg cells
- 6. length of time during which the female is pregnant
- 9. release of the egg cell from the ovary
- 10. removal of testicles
Down
- 2. removal of female reproductive organs
- 3. period of time that milk is secreted by the mammary glands
- 7. first milk produced after a mammal gives birth that contains antibodies needed for the offspring's immunity
- 8. age at which animals reach sexual maturity and are able to reproduce