Dog had a vaccine at the vet a few days ago and now there's a lump at the injection site. Is that normal or should I be calling the vet?

A few days ago, my dog had a vaccine at the vet, and I've just noticed a lump where the injection was given. It doesn’t seem to bother him, but it's visibly there, and I’m not sure if this is a normal reaction. Should I be concerned about this lump, or is it something that will go away on its own?

Embark Dog DNA Test

Recommended Product

Your dog's DNA could reveal hidden health risks.

Screen for 270+ genetic health risks and 350+ breeds. Veterinarian developed, research partner of Cornell University.

$199 USD
$139 USD
Save $60· Free US Shipping

Answer

It's common for dogs to develop a small lump at the site of a recent vaccination. These lumps are typically benign and resolve on their own within a few weeks.

  • Slight swelling after vaccination is usually harmless
  • Monitor the lump for any changes in size or appearance
  • Consult your vet if you're concerned or if it doesn't improve

When a vaccine is administered, it's not unusual for a small lump to form. This is the body's normal inflammatory response as it's working to process the vaccine. Most of the time, these lumps are painless and resolve without any intervention within a few weeks. However, keep an eye on the size and any signs of irritation. If the lump grows larger, becomes red, or seems to bother your dog, you should get in touch with your vet.

Book a consultation with a licensed vet at Dial A Vet for just $49 AUD if you're unsure or symptoms are getting worse.

Frequently Asked Questions

  • How long should a lump last after vaccination?

    A minor lump can last anywhere from a few days to a few weeks. If it persists beyond that, consult your veterinarian.

  • What are the signs of a serious reaction to a vaccine?

    Serious reactions may include persistent vomiting, difficulty breathing, hives, or facial swelling. If any of these occur, seek veterinary care immediately.

  • Can I do anything to help the lump go away faster?

    Some gentle massage around the area might aid in circulation, but avoid excessive pressure. Always consult your vet for the best advice on care specific to your pet's situation.

Clinically Approved Standard by Dial A Vet Veterinary Team

Disclaimer: The customer and expert messages presented herein may have been altered with artificial intelligence or modified to enhance readability and safeguard the privacy of individuals. This content is for informational purposes only and is not a substitute for professional veterinary advice, diagnosis, or treatment. If your pet is experiencing a medical emergency, contact your local veterinarian or emergency animal hospital immediately. Talk to a vet now.

Next available appointment

Loading…