Q. What are the chances that my 13 mo female Shih Tzu will get pregnant after mating three times last month? I believe it did not lock.
JESSICA L DESROSIERS
A. Any mating attempt on a dog in heat can potentially lead to pregnancy. Usually the male will "lock" with the female during copulation, however ejaculation can still sometimes occur before this event.
Typical pregnancy length in a dog is 60-63 days, so if your female was mated at the end of October, she may be about 1/4 of the way through a pregnancy. Bringing her to your local vet or theriogenologist (animal reproduction veterinarian) can determine if she is actually pregnant. Samples of the vaginal lining, ultrasound and sometimes X-ray (if your dog is far enough advanced in her pregnancy) can all be used to determine the state of pregnancy and your dog's health.