Hi my dog has a lump on his lip but is otherwise we'll what could it be? Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Male | neutered | 3 years and 8 months old | 28 lbs

This appears to be a mass or bacterial or fungal infection which should be examined by a veterinarian. Sometimes infection happens in skin folds near the lips and that can usually be avoided by using specific wipes with which to clean the folds regularly. If this is a mass, your vet will likely want to take a small tissue sample with a fine needle to be examined under the microscope. This will help determine whether the mass is benign, malignant, caused by inflammation and needs to be removed. Please make an appointment with your veterinarian soon.

Anytime a new mass is noticed, I always recommend having it evaluated to see what it is and if anything needs to be done about it. Unfortunately, we can't tell anything about a mass by just looking at it. Your vet can perform a simple test called a fine needle aspirate where they use a small needle to collect some cells from the mass, then look at them under the microscope. They may even need to send the cells to the lab for a pathologist to examine them, so we know what the mass is. If it is benign, you might not need to do anything about the mass at all, but if they see cells that worry them, they might recommend removing the mass. The most common type of mass that we see in young dogs is called a histiocytoma, but there are a number of other types of masses that it could be. I have included a link with more information about histiocytomas below. https://www.veterinarypartner.com/Content.plx?P=A&S=0&C=0&A=1676 Good luck! I hope that was helpful. Thanks for using PetCoach.

My dog has a lump on his lip, but seems otherwise well. What is it?

Updated On September 23rd, 2025

Hi my dog has a lump on his lip but is otherwise we'll what could it be?

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Answered By Dr. Massimo Orioles, DVM, Cert AVP, MRCVS 77

Veterinarian

Published on May 19th, 2017

This kind of lump/growth needs to be ideally assessed by your veterinarian to have a definitive and specific answer. Usually there are two ways your vet can do that a part from examining it directly during physical examination. A biopsy can be taken under local or general anesthetic, otherwise a smaller sample through a fine needle can be aspirated (this technique is called FNA= fine needle aspiration). Differentials include skin cysts, infections, benign or more sinister type of tumors. Please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further.

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My dog has a lump on his lip, but seems otherwise well. What is it?

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