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Why does my dog have a sudden hard bump on her snout and red sores?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Female | unspayed | 1 year old | 40 lbs

My dog randomly developed a hard bump right on her snout. It was not there a few hours ago. She doesn't seem to be in pain, and she is not scratching at it or anything. She recently had fleas if that matters. She just turned 1 year old a few days ago She also has red sores around her mouth that have been there for a while

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1 Answer

Most Helpful Answer

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Answered By Laura Johnson VMD

Veterinarian

Published on November 4th, 2017

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! A lot of skin bumps and lumps can look the same. She could have hit her nose on something and the bump is related to trauma and will go away, it could be a benign growth (like a histiocytoma), it could be part of a skin infection or immune reaction, hives or a cancerous growth. If the bump doesn't resolve in a few days I recommend having your Vet look at it. The sores around her mouth can also be due to infection or an immune condition and may or may not be related to the new bump on her nose. I hope this helps and I wish Luna a speedy recovery!

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