Petco Text Logo
Petco Pet Logo

  • Two Easy Ways to Start Earning Rewards!

My puppy has a lump after vaccination. Is it normal and will it fade?

Updated On September 23rd, 2025

Pet's info: Dog | Golden Retriever | Female | unspayed | 4 months and 9 days old | 45 lbs

My puppy has a movable, painless, small lump (about the size of a marble) at the site of vaccination. Will it be fine on its own?

3 Answers

Most Helpful Answer

Image profile

Answered By Laura Johnson VMD

Veterinarian

Published on June 16th, 2018

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! Yes, Luna should be fine. It isn't uncommon for a pyogranulomatous reaction to occur at the site of vaccination. This forms a painless lump in the subcutaneous tissue. It should resolve on it's own in a few months. I most commonly see if with the Rabies vaccine. Have a great day!

Vote icon

2Pet Parents found this answer helpful

Other Answers

  • Image profile

    Answered By Dr. Davis

    Veterinarian

    Published on October 17th, 2017

    Yes this could be a reaction to a vaccination. I see this most often with a rabies vaccination. Sometimes this takes a few weeks to go away completely. As long as it isn't getting bigger and it's not painful I would just monitor it. Should it enlarge or be hot and sore Pedro should have it examined. They may take some cells from it and look under the microscope to see if it's an infection or growth. from the photo at this point it's nothing to be overly concerned about. Thanks for using Petco Pet Education Center, formerly Petcoach to help you care for Pedro.

    Vote icon

    1Pet Parents found this answer helpful

  • Image profile

    Answered By Emily Fukuzato, DVM

    Veterinarian

    Published on April 22nd, 2019

    Hello and thank you for reaching out about this lump. Given the timing since his vaccinations and the lup under his skin this looks like a local vaccine reaction. This can be very common and should go away very soon and not cause any harm long term. If the swelling continues to get worse, is very painful, or does not go away within a few days, please have him rechecked by his doctor right away.

    Vote icon

    1Pet Parents found this answer helpful

See More Answers

Related Questions

Petco Pet Education Center
Health & Wellbeing
What fish dog food helps dry skin if my dog eats Science Diet?
Is your dog's dry skin a concern? A certified vet offers expert advice on finding the best fish-based dog food alternatives to Science Diet for essential oils.
Updated on February 04, 2026
Petco Pet Education Center
Health & Wellbeing
My guinea pig has a growing lump on its neck. Can it heal itself?
Guinea pig has a growing, hard neck lump? Worried about vet costs? A certified veterinarian advises on crucial steps for diagnosis and your pet's well-being.
Updated on December 04, 2025
Petco Pet Education Center
Health & Wellbeing
My pet has a lump on their neck. What is it and what should I do?
Is your pet's lump a mystery? A licensed vet tech explains common causes like tumors or infections. Discover why a vet visit is crucial for diagnosis and treatment.
Updated on December 04, 2025
Petco Pet Education Center
Health & Wellbeing
My mouse has a growing lump. What can I do if I can't afford a vet?
Concerned about your mouse's growing lump and vet costs? A trusted Petco veterinarian provides guidance on managing her comfort during this difficult time.
Updated on December 04, 2025
Petco Pet Education Center
Health & Wellbeing
My pet has a soft lump. How long can I wait before seeing a vet?
Discovered a soft, nickel-sized lump on your pet's chest? A certified veterinarian offers expert advice on tracking changes and when to seek professional evaluation.
Updated on December 04, 2025
Petco Pet Education Center
Health & Wellbeing
Why is my pet's swollen lump with green patches not getting better?
Is your pet's swollen, green-patched infection still bothering them after treatment? A certified veterinarian discusses proper diagnosis methods like biopsy and FNA.
Updated on December 04, 2025
image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Book Now

Sponsored