Ear infections in dogs
Ear infections (otitis externa) are very common, especially in dogs with floppy ears or allergies. Yeast and bacteria are the usual culprits.
Last updated: October 2026 · 2 sources · see sources
Signs to watch for
- Head shaking
- Scratching ears
- Smell
- Dark discharge
- Red ear canal
- Pain when touched
Trouble breathing, collapse, repeated vomiting, not peeing, or a seizure that lasts more than a few minutes needs a vet right away. See when to see a vet.
How vets diagnose it
Your vet looks in the ear with an otoscope and checks a swab under the microscope (cytology). [2]
How it's treated
Treatment includes cleaning and medicated ear drops or long-acting gels applied in the clinic. Allergies often need treatment too. [2]
Medicines your vet may mention: Apoquel, Prednisone & Prednisolone. We don't list doses; your vet will decide what fits your pet.
What it costs to diagnose and manage
These are typical US ranges from the sources listed. Your pet's costs depend on how severe things are, the tests your vet recommends, your pet's size and where you live. Ask your vet for a written estimate.
Outlook
Most infections clear up. Repeat infections are a sign to look for an underlying cause. [2]
Common questions
What is ear infections in dogs?
Ear infections (otitis externa) are very common, especially in dogs with floppy ears or allergies. Yeast and bacteria are the usual culprits.
What are the signs of ear infections?
Common signs include: head shaking, scratching ears, smell, dark discharge, red ear canal, pain when touched.
How do vets diagnose ear infections?
Your vet looks in the ear with an otoscope and checks a swab under the microscope (cytology).
How is ear infections treated?
Treatment includes cleaning and medicated ear drops or long-acting gels applied in the clinic. Allergies often need treatment too.
How much does ear infections cost to treat?
Diagnosis (exam and tests): $50–$150; Treatment: $100–$300. Costs vary with severity, tests, your pet's size and where you live.
Related
This page is general information for pet owners, not veterinary advice. Talk to your vet about your own pet.