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My unspayed female dog has a firm bump on her stomach. What is it?

Updated On September 23rd, 2025

Pet's info: Dog | American Pit Bull Terrier | Female | 64.6 lbs

Female unspayed dog has a weird squiggle raise bump on her stomach. Firm. No heat. Any ideas

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2 Answers

Most Helpful Answer

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Answered By Dr. Dayna, DVM, CVA

Veterinarian, Certified Veterinary Acupuncturist

Published on November 11th, 2017

It looks like the bump is inline with her mammary chain. Intact females are prone to developing mammary tumors. Is is about a 50% chance of it being malignant. I would recommend surgical removal with biopsy. I usually recommend that the patient also be spayed at the same time to decrease the likelihood of further mammary tumor development. Best of luck and thank you for using Pet Coach.

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    Answered By Linda G, MS, DVM

    Veterinarian

    Published on

    Hello, thank you for using Petco Pet Education Center, formerly Petcoach. This appears to be a venous varicosity, which simply means an enlarged or engorged vein. Why? Hard to tell. Usually it is due to chronic venous obstruction, similar to what people ( especially women ) would get when they had to stand on their feet on a production line all day long. There are little valves in the veins, & sometimes they break down & the blood just accumulates & pools. You could have it removed, especially if you plan to spay her, but it would be a good idea to consider an angiogram or ultrasound to see if there is an underlying reason why it popped up. If there is some underlying reason for this vein to become congested, other veins may well follow suit. Hope this helps.

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