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My cat has dark ear wax buildup. Is it an infection or just wax?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Male | neutered | 8 years and 8 months old | 14 lbs

Hi, my cat seems to be getting more wax buildup in one ear. It's a dark wax which made me think of an ear infection, however, there is no inflammation, smell, or excess scratching behavior exhibited. Could this be a very early infection or just an ear wax issue?

1 Answer

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on April 6th, 2018

Good question! I would be concerned as well that a build up of gunk in one ear is an indication of an ear infection, even if you aren't seeing any other signs at the moment. Based on this, I think it's a good idea to have Nick seen by a vet in the next day or two to have his ear examined. The vet can diagnose if he does have an ear infection, what's causing it (ear mites, bacteria, yeast), and can prescribe medication to treat it. Even if it's just an excess build up of gunk and not an ear infection, the vet can give you an ear cleaner such as Epi-Otic to help clean out that ear. I hope this helps, best of luck!

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