What Is Deafness in Dogs?
Deafness is a partial or complete loss of hearing in one ear (unilateral) or both ears (bilateral). Some dogs are born deaf, while others lose their hearing later because of age, long-term ear disease or certain drugs. Dogs adapt remarkably well, and a deaf dog can live a full, happy life with a few changes at home and in training.
Dogs that are deaf in only one ear often go unnoticed, because they still respond to most sounds. They may simply have trouble telling where a sound is coming from.
Born deaf vs. losing hearing
Congenital deafness is present from birth and is usually permanent. Acquired deafness develops later. Hearing loss caused by an ear infection or wax blockage can sometimes improve with treatment, so a vet check is always worthwhile.
Common Causes
- Congenital (inherited) deafness: linked to the genes for white coats, piebald patterns and merle coloring. Dalmatians, Bull Terriers, English Setters, Australian Shepherds and Australian Cattle Dogs are among the breeds most affected. Dogs with blue eyes and mostly white heads have a higher risk.
- Age-related hearing loss: many senior dogs gradually lose high-frequency hearing, often alongside other ageing changes covered in senior dog care.
- Chronic ear disease: long-standing otitis externa or middle-ear infections can thicken and narrow the ear canal and damage the eardrum.
- Ototoxic drugs: some antibiotics, ear cleaners and medications can damage the inner ear, especially if the eardrum is ruptured.
- Other causes: head trauma, very loud noise exposure, ear polyps or tumors.
Signs Owners Notice
- Not waking or reacting when called, or startling when touched while asleep
- No response to squeaky toys, doorbells or the treat bag
- Barking more loudly or unusually often
- A puppy that is much harder to wake than its littermates or follows the others rather than reacting to sound
- Head tilting or turning the wrong way toward a sound (common with one-sided deafness)
Diagnosis
Your vet will examine the ear canals and eardrums and look for infection, wax or growths. The gold-standard hearing test is the BAER test (brainstem auditory evoked response). Small electrodes record the brain’s electrical response to clicks played into each ear. It is painless, takes only a few minutes and can be done from about 5 to 6 weeks of age, which is why responsible breeders of at-risk breeds test litters before puppies go home. BAER testing is usually offered by veterinary neurologists or specialty centers.
Treatment and Outlook
- Congenital deafness: there is no cure, but it does not cause pain and dogs adapt quickly.
- Ear disease: treating infection, removing blockages or surgery for polyps may restore some hearing.
- Drug-related loss: stopping the medication early may limit damage, though loss is often permanent.
- Age-related loss: not reversible, but most senior dogs cope well with routine and visual cues.
Practical Tips for US Pet Owners
- Train with hand signals and a consistent “watch me” cue. A flashlight or porch light flick works well for recall at night.
- Use a vibration collar (never a shock collar) as an attention cue once your dog understands what it means.
- Wake your dog gently by placing your hand near its nose or tapping the floor so it feels the vibration.
- Keep deaf dogs on leash or in securely fenced areas, since they cannot hear traffic or your call.
- Add a tag that says “I am deaf” to the collar.
- Find a trainer experienced with deaf dogs through dog training listings, or a vet for a hearing check through veterinary clinic listings.
When to see a vet
Book a visit if your dog suddenly stops responding to sound, shakes its head, scratches its ears or has an ear odor or discharge. Sudden hearing loss with a head tilt or loss of balance needs a prompt exam. See dog ear infections for related signs.
Key Takeaways
- Deafness can be congenital, age-related or caused by ear disease and drugs.
- White, piebald and merle dogs carry the highest inherited risk.
- The BAER test confirms hearing in each ear from about 5 to 6 weeks of age.
- Deaf dogs train well with visual and touch cues.
FAQ
Can deaf dogs be trained?
Yes. Deaf dogs learn hand signals as easily as hearing dogs learn spoken cues. Positive reinforcement and consistency matter most.
Are deaf dogs more likely to bite?
Not inherently. The main risk is startling a sleeping dog, so teach family members to wake the dog gently and let it see them first.
Can cats be born deaf?
Yes. White cats with blue eyes have a high rate of congenital deafness, linked to the same pigment genes.