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My dog has a bump on his lower lip. Is it serious or just a trauma?

Updated On September 23rd, 2025

Pet's info: Dog | American Pit Bull Terrier | Male | neutered | 3 years and 1 month old | 70 lbs

My dog has a weird bump on his lower lip.

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4 Answers

Most Helpful Answer

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Answered By Emily, DVM

Veterinarian

Published on June 8th, 2017

This could be caused by trauma (biting his lip) or it could be an early mass or even an infected gland. You could monitor its size and shape every day to every few days and if it hasn't changed Jax could be ok just to watch it until his next veterinary visit.

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    Answered By Daniel Fonza, DVM

    Veterinarian

    Published on July 2nd, 2018

    Hi there and thank you for using Petco Pet Education Center, formerly Petcoach to address your question. Based on the photo, it is difficult to say for sure what this could be but I suspect this may be a cyst or a swelling due to trauma. If Finn bumped his lip on something, this could be swollen because of that. This may also be an insect bite causing swelling. I would keep in eye on this for the next 24 hours and if it does not resolve, I would recommend taking Finn to a veterinarian to have this examined so that the most appropriate diagnostic and treatment recommendations can be made. I hope this helps! Please let me know if you have any other questions or concerns and I would be more than happy to help you further.

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    Answered By Linda G, MS, DVM

    Veterinarian

    Published on March 1st, 2019

    Hello. This does not look too alarming at all. Just check on it every now & then & see if it seems to be changing, growing,etc. But at this point, I would not recommend doing anything except watchful waiting. thanks for using Petco Pet Education Center, formerly Petcoach.

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    Answered By Ricardo Fernandez, DVM

    Veterinarian, Veterinary Oncology Resident

    Published on May 9th, 2018

    Thanks for using Petco Pet Education Center, formerly Petcoach! This could be a benign or malignant growth. There is no way of knowing what it is just based on its appearance. This could even be an abscess or infected lesion. This is often differentiated by a test called a fine needle aspirate (FNA) which is a pain free, inexpensive and easy procedure which in most cases will help reach a diagnosis. Sometimes a biopsy is needed for a definitive diagnosis. I recommend that you have her evaluated by your veterinarian for further assessment and treatment. I am really hoping for something benign. Good luck and have a good day!

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Hi there and thank you for using Boop by Petco to address your question. Based on the photo, it is difficult to say for sure what this could be but I suspect this may be a cyst or a swelling due to trauma. If Finn bumped his lip on something, this could be swollen because of that. This may also be an insect bite causing swelling. I would keep in eye on this for the next 24 hours and if it does not resolve, I would recommend taking Finn to a veterinarian to have this examined so that the most appropriate diagnostic and treatment recommendations can be made. I hope this helps! Please let me know if you have any other questions or concerns and I would be more than happy to help you further.
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