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My dog is pregnant by her son. Are there risks for mom or puppies?

Updated On September 23rd, 2025

Pet's info: Dog | Chihuahua | Female | unspayed | 3 years and 8 months old

I think my female maybe pregnant by her son is there any risks in may face with her

2 Answers

Most Helpful Answer

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Answered By Jessica Desrosiers

Veterinary Technician

Published on December 14th, 2015

Inbreeding can sometimes cause birth defects in the puppies, which may be a problem down the line, however the incidence is relatively low. If you suspect your female is pregnant it is best to have her examined by your veterinarian to determine the pregnancy and the health of mom and puppies. A typical pregnancy lasts around 63 days in a dog. It is also a good idea to get both your male and female spayed and neutered if you do not wish to have further litters to prevent accidents from occurring again in the future.

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10Pet Parents found this answer helpful

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    Answered By Angel Alvarado, LVT

    Licensed Veterinary Technician

    Published on

    Most dogs will have uneventful pregnancies regardless of stud unless there is a size discrepancy. The concern is for genetic defects due to inbreeding. Spay and neuter them to prevent unwanted or accidental litters in the future.

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    5Pet Parents found this answer helpful

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