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What causes dog ear infections, like allergies, yeast, and bacteria?

Updated On September 23rd, 2025

Pet's info: Dog | Beagle | Female | spayed | 1 year and 4 months old

What are the main causes of dogs ear infections with Malassezia and coco bacterias?

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1 Answer

Most Helpful Answer

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Answered By Dr. Heidi DVM, CVA, CCRT, CVTP, CVSMT, CVCH

Veterinarian, Certified Veterinary Acupuncturist, Certified Canine Rehabilitation Practitioner

Published on September 3rd, 2017

The short answer to your question is that ear infections are most commonly caused by underlying allergies. Both yeast (Malassezia) and bacteria normally live on the skin and in the ear canals, but can cause infections in some cases. The following handout has an excellent description of ear infections in the first section. I hope it will give you a better idea about ear infections in dogs. https://www.veterinarypartner.com/Content.plx?P=A&S=0&C=0&A=632 I hope that was helpful! Thanks for using PetCoach.

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