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My dog has lumps on her breast or stomach. Could it be serious?

Updated On September 23rd, 2025

Pet's info: Dog | Miniature Pinscher | Female | unspayed | 10 years and 1 month old | 17 lbs

My dog has lumps are on her breast and stomach

1 Answer

Most Helpful Answer

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Answered By Jessica Keay, DVM

Veterinarian

Published on June 10th, 2017

Any lumps on the breast of an unspayed dog should be investigated by your veterinarian as they can be mammary carcinoma, or breast cancer. There are many other masses that can appear under the skin that may be more benign, such as lipomas or fatty tumors, but it is best to have your vet examine these masses and take a sample from them to determine if they are an aggressive cancer that requires removal.

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