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My female dog has a lump on her breast. Is it mammary cancer?

Updated On September 23rd, 2025

Pet's info: Dog | American Bully | Female | unspayed | 6 years and 9 months old | 55 lbs

Hi: my name is Denise my fluffy daughter Moet Williams she has a big lump in one of her breast can you tell me what it may be Thank You Denise Williams

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1 Answer

Most Helpful Answer

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Answered By Linda G, MS, DVM

Veterinarian

Published on August 8th, 2020

Hello. The most likely cause for the lump on Moet is mammary cancer. You do want to have your veterinarian examine Moet as soon as possible & schedule her for surgery. Fortunately, breast cancer in dogs is not as aggressive as it is in women, so removing the tumor may be be curative for this site. Unfortunately, other tumors can turn up in other parts of the mammary chain, so you may want to discuss any follow up chemotherapy after the tumor has been analyzed by a pathologist. Sorry for some bad news, but I am glad you are looking for information. The sooner you address this, the better things will be for Moet. Good luck & thanks for contacting Petco Pet Education Center, formerly Petcoach.

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