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My dog has a lump on her stomach near a bite. Is it serious?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Female | unspayed | 8 years and 2 months old | 7 lbs

My dog has a lump on her stomach along with a bite mark next to it. What is this. Should I be concerned?

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1 Answer

Most Helpful Answer

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Answered By Menolly Cote, DVM, CVA

Veterinarian, Certified Veterinary Acupuncturist

Published on June 15th, 2017

Good morning. Lumps or swellings can occur for a variety of reasons in dogs. I am not able to see a bite mark in the picture, but if there is a wound associated with the swelling, this could indication an infection or abscess has formed. Other potential causes for a swelling would be inflammation secondary to insect bites, a cyst or even a tumor. In the picture, it appears that the lump may be close to a nipple. Since Zoey is not spayed, she is at a higher risk for developing mammary cancer and this location would fit with a growth within the mammary chain. I would recommend that you have Zoey seen by your veterinarian so they can better evaluate what may be going on. They will perform a thorough examination and will likely recommend a fine needle aspirate of the lump. This is a procedure in which a small needle is used to collect cells from a lump to better determine what is causing it. This typically does not cause much pain and can be very helpful in determining what may be going on.

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