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Jane Lefler
Jane Lefler, Breeder,Behaviorist, formerVet Asst
Category: Dog
Satisfied Customers: 18804
Experience:  Former vol Vet Assistant.Breeder 18+ years Dog trainer / behaviorist
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What can happen if a brother and sister shi tzu mate How ...

Customer Question

What can happen if a brother and sister shi tzu mate? How will know if she is pregnant? They were locked up for approx. 15 min.
Submitted: 9 years ago.
Category: Dog
Expert:  Jane Lefler replied 9 years ago.

If you witnessed a tie most likely she is pregnant. What happens will depend on how closely related their ancestors are. If their mom and dad were closely related or if there was a lot of inbreeding and line breeding in their pedigree, you may have a problem with deformities with such a closely related breeding. The pups may have a suppressed immune system opening the door to conditions like demodectic mange, pneumonia, less resistance to diseases. Any faults of the breed your dogs may have will result in higher odds of the puppies having the same faults as well.

You should get at least one of your dogs fixed to avoid this in the future. You should notify potential new owners of the puppies of the circumstances of their birth so they will be prepared if their pup should develop problems.

Pregnancy in dogs is difficult to determine in the early stages. Dogs have a heat cycle during which she ovulates and "ties" with a male in order to become pregnant. If you witnessed a tie, most likely she is pregnant. One sign is a vulva that does not completely shrink down--it stays soft and a bit more swollen than what is normally seen after a heat cycle. You may also begin to see a discharge that is sticky and dries quickly on the hair around the vulva. Around week four of the pregnancy you might notice a thickening and the start of weight gain and some swelling of the breasts.

Your Vet has a few different ways to determine if your dog is pregnant. They can run a blood test to confirm pregnancy based on hormonal levels. They can also gently palpate the abdomen at about a month after breeding to feel for puppy bumps. They can perform an x-ray during the final week of pregnancy (8th week) and look for puppy skeletons. This method can give you a good idea of how many puppies your dog may have. Ultrasound may also be available at your vet and can help determine pregnancy in a dog. Once a dog reaches the 8th week of pregnancy, you can frequently feel the puppies moving around inside of mom. I find it best to have the dog on their side and feel between the rib cage and hindquarters above the breast area.

Puppies are born approximately 57 to 64 days after breeding with the average being 63 days depending on when ovulation occurred.

False pregnancy does occur in dogs and the symptoms are the same as if they were indeed pregnant. If in the fifth week following mating your dog is experiencing these symptoms, she may be pregnant and should be fed a high quality puppy food. I feed any female that has mated a high quality puppy food until it is determined they did not conceive.

I know you were looking for a sure fire answer but it really is difficult.

Hope this helps.

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