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My dog's nipples are swollen and she seems sick. Is it serious?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Female | unspayed | 3 years and 9 months old

My dog has swollen nipples and seems sick

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1 Answer

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on June 19th, 2018

There are a couple of things that could be wrong with your dog. She could be pregnant causing her swollen nipples and making her feel ill. It could be that she has mammary tumors also causing these symptoms. If she had puppies recently, she could have mastitis (an infection of the mammary glands). Finally, she could have a pyometra which is an infection of the uterus that is fatal without treatment. Because both mastitis and a pyometra are fatal without treatment, and since I can't see her in person to rule them out, I think it's best that she sees a vet right away. The vet can diagnose what is causing these symptoms and the best way to treat her. Please take her into a vet now. Best of luck.

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