Updated October 14, 2026. Fact-checked against veterinary sources; review by a licensed veterinarian is in progress. See our editorial policy.
Quick answer: Ear infections don’t shorten a dog’s life, but chronic or untreated infections can cause lasting problems: pain, thickened and narrowed ear canals, spread to the middle and inner ear, hearing loss, and sometimes the need for surgery. Treating infections fully and addressing the underlying cause, usually allergies, keeps most dogs comfortable long term.
Complications of chronic infections
- Thickened, narrowed canals that trap debris and make treatment harder
- Middle ear infection (otitis media): can cause head tilt, facial nerve problems, and pain
- Inner ear involvement: loss of balance
- Hearing loss
- Aural hematoma: a blood-filled swelling of the ear flap from head shaking
- Resistant bacteria after repeated treatments
End-stage ear disease
When canals are permanently damaged, surgery to remove the ear canal (total ear canal ablation) may be recommended. It relieves chronic pain for many dogs.
Keeping ears healthy
- Treat infections fully, with rechecks
- Manage allergies
- Keep ears dry after swimming
- Weekly ear checks
More: ear infection treatment.
Sources
- Merck Veterinary Manual: Otitis externa in dogs
- Paterson S. Discovering the causes of otitis externa. In Pract. 2016
- Merck Veterinary Manual: Otitis media and interna
This article is for general education and is not a substitute for care from your own veterinarian. Learn about The Pet Vet and our editorial policy.