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My dog's neck has a sudden lump or swelling. What could it be?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Male | unneutered | 8 months and 29 days old | 25 lbs

My dog has developed a lump or swelling in his neck area this growth accured in just a few hours what could it be?

1 Answer

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on March 30th, 2017

Oh no, poor Tax! He could have a cyst or an abscess causing this sudden swelling. I would keep an eye on him tonight, and if it keeps swelling or causing his difficulty breathing, he needs to see a vet immediately. Otherwise, I would have him been by a vet in the morning for this. The vet can diagnose what is causing the swelling, and can treat him for it.

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