| A | B |
|---|
| reproduction | the process by which animals produce offspring |
| parturition | process of giving birth |
| lactation | the secretion of milk by female |
| sexual reproduction | the union of sperm and egg |
| sperm | the sex cell of the male |
| egg | the sex cell of the female |
| fertilization | the process by which the union of sperm and egg occur |
| insemination | the union of sperm and egg in the female reproduction tract |
| natural insemination | male and female mate, sperm placed in female's tract by copulation |
| heat | the time in the estrous cycle |
| artificial insemination | placing semen collected from a male into the female's reproductive tract manually |
| sexual classification | condition of an animal based on its age and sexual condition |
| castration | removal of testes from the male |
| neutering | process of making female incapable of reproduction |
| prepuberty | the stage of a young animal before it is capable of reproduction |
| puberty | the stage when an animal reaches a level of sexual development where it is capable of reproduction |
| gestation | period when female is pregnant |
