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Why does my dog have a bump and hair loss on their skin?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Male | neutered | 1 year and 1 month old | 48 lbs

I found this bump and loss of hair on my dog. What is this?

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2 Answers

Most Helpful Answer

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Answered By Rebecca, DVM

Veterinarian

Published on June 27th, 2018

Hi, thanks for using Petco Pet Education Center, formerly Petcoach. It looks like Kanye may have a small area of inflammation. This could be from a scratch or insect bite. Keep watch on it and if it gets bigger, changes color or doesn’t get better in a few days I recommend a vet visit to have it assessed to be sure it isn’t a mass or tumor.

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7Pet Parents found this answer helpful

Other Answers

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    Answered By Jessica Keay, DVM

    Veterinarian

    Published on May 16th, 2018

    I am sorry to hear about Diesel! It is a bit difficult to discern what is going on in these photos. We can have things like insect bites cause red bumps, as well as bacterial or fungal infection of the skin. If he isn't already on a good flea and tick preventative, I would recommend calling your vet to get him started. With the location we could also be having a reaction to a collar. Be sure the collar he has is clean and not too tight. Avoid prong collars or shock collars. You can try putting a harness on him to avoid rubbing against that area until it heals. A visit to his vet is recommended if more bumps are appearing or the area is not resolving.

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    1Pet Parents found this answer helpful

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