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My dog is licking a swollen sore with a growing lump. Vet needed?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Large (61lb +) | Male | unneutered | 6 years old | 90 lbs

Hello, the night before last I noticed my dog Lee licking at what appears to be a sore and yesterday I noticed its swollen. But I'm concerned because it looks like a lump is growing. This is the first time I see something like this. Is this serious? Should I take him to the vet asap? I'm worried. Thank you.

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1 Answer

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Answered By Laura Johnson VMD

Veterinarian

Published on July 20th, 2017

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! Poor Lee! Based on your photo is appears to be either a pyoderma (skin infection) or a hot spot (superficial skin infection). Because it is getting worse quickly, make an appointment tomorrow to get your Vet to look at ti. They will likely prescribe antibiotics, something for the itch, and maybe a topical. Good luck!

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