Basic reproduction of the dog

Lecture Notes

Estrus. Estrus is the period of sexual receptivity. Note that the stage of estrus is a noun and is spelled differently than the adjective describing the estrous cycle.

Proestrus was getting us ready for the possibility of mating, and estrus is when the bitch is receptive to the male so that mating can occur.

Estrus is also the period in which ovulation occurs.

Estrus technically begins on the first day that the female will stand for mounting and ends when the female no longer accepts the male for mounting.