Breeding timing means insemination during the estrus or the heat period in order to maximize fertility and the chances of conception. This technique is utilized to ensure conception in dogs.
To maximize the chances of conception with timed breeding, it is important to have a close estimate of the day of ovulation for the bitch. The onset of estrus in the bitch is characterized by reduced swelling in the vulva and the appearance of vaginal discharge. The male dog will show interest in the female and she will respond to being stroked at the genital region by elevating the tail to one side. A vaginal exam can provide a better indication of a fertile period.