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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

3 Answers

Most Helpful Answer

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.

1Pet Parents found this answer helpful

Related Answers from Veterinarians

Answered By Dr. Leigh, DVM
Veterinarian
Published on March 20th, 2017
Poor Conny! She could have an infection but she could also have a mammary mass that is causing the problem. She needs to be examined by your vet to determine the exact cause. She will need an oral antibiotic if she has an infection. If there is a mass than your vet will need to get a biopsy to determine the exact cause. Please call your vet and have her seen as soon as possible, especially since she is not eating. Hope she feels better soon!
1Pet Parents found this answer helpful
Answered By Megan, DVM, CVA
Veterinarian
Published on July 18th, 2017
She may have some mastitis, an infection in her mammary tissue. I would have your vet take a look at her. Your vet may want to check her white blood count to ensure it isn't elevated. Your vet may also want to put her on some antibiotics. If she is st all lethargic or decreased appetite I would take her in ASAP as an infection can go systemic and cause them to be really ill. I hope this helps and she starts to feel better.
1Pet Parents found this answer helpful

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