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My dog has a patch of missing fur near his mouth. What's the cause?

Updated On September 23rd, 2025

Pet's info: Dog | Siberian Husky | Male | 9 months and 4 days old | 50 lbs

My dog had a patch of fur missing on the side of his mouth and I'm curious as to what it could be.

This question includes photos that may contain sensitive content. Click to view.

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1 Answer

Most Helpful Answer

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Answered By Laura Johnson VMD

Veterinarian

Published on August 18th, 2017

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! Thanks for the picture. The most common cause is probably demodex, a non contagious mite. In young animals they can over grow and cause localized patches of hair loss. Other causes are: ring worm, abrasion or skin infection. If it gets worse or doesn't improve I recommend taking Echo to the vet. Demodex is diagnosed by a skin scrape. Hope this helps! Good luck!

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3Pet Parents found this answer helpful

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