Deafness in Older Cats: Causes and What to Expect

Name: Deafness in Older Cats: Causes and What to Expect
Creator: Dr. Zubair Khalid

By Dr. Zubair Khalid, DVM, MS, PhD · 2026-10-03

Deafness in old cats is common and usually develops slowly as the ears age, though ear infections, polyps, and inherited conditions can also cause it. Most cases cannot be reversed, but a deaf cat can live a full, comfortable life with a few changes at home. This article is educational and is not a substitute for veterinary diagnosis or treatment.

Quick Answer

Age-related hearing loss in cats is permanent and cannot be cured, but it is not painful and does not shorten lifespan on its own.
Congenital deafness is present at birth and is most often linked to white coat color and blue eyes, especially in certain breeds [1][2].
Ear infections, wax buildup, polyps, and tumors can cause acquired deafness, and some of these are treatable if caught early [1].
Partial deafness in cats and one-sided deafness are easy to miss because cats adapt quickly and may seem to "ignore" you instead of being unable to hear you [1][3].
A deaf cat needs indoor-only living, predictable routines, and visual cues instead of verbal commands.

What Deafness in Old Cats Actually Means

Hearing loss in cats falls into two broad groups. Congenital deafness is present from birth. Acquired deafness develops later in life, and in older cats the most common driver is simply aging [1][3].

The ear has three parts: the outer ear canal, the middle ear, and the inner ear. Sound travels through all three and is converted into nerve signals by tiny hair cells in the inner ear. When those hair cells or the nerves behind them are damaged, the loss is called sensorineural. When the problem is a blockage, wax, fluid, or damaged ear bones, the loss is called conductive. Conductive losses are more likely to improve with treatment [1].

Cats can lose hearing in one ear or both. They can also have partial deafness in cats, meaning they hear some sounds but not others, or only loud sounds. Unilateral deafness (one ear) often goes unnoticed for months because the cat still responds to most noises [3].

Signs of Hearing Loss You May Notice at Home

Cats hide hearing loss well. A deaf cat still feels vibrations, reads your body language, and watches the other pets in the house. In a multi-cat home, a deaf cat may copy the others and never seem impaired [1].

Common signs include:

Not coming when called, especially when you are out of sight
Not reacting to the doorbell, vacuum, or food bag
Sleeping through sounds that used to wake your cat
Turning the wrong way or not turning at all when you speak
Meowing louder than before, because your cat cannot hear its own voice
Startling easily when you touch your cat from behind
Watching your face and hands closely for cues

Some of these signs overlap with other senior cat problems. A cat that seems "off" may also be dealing with signs of kidney disease in old cats, which can cause lethargy and appetite changes that owners mistake for behavior shifts.

Causes of Deafness in Cats: Why Older Cats Lose Hearing

Age-Related Hearing Loss

Presbycusis is the medical term for hearing loss that comes with age. It happens because inner ear structures and the nerves that carry sound signals gradually degenerate. In animal models, measurable changes in the brain's response to sound appear before hearing thresholds actually shift, which means the process starts earlier than most owners realize [4]. In practice, this means your cat may be losing hearing for months before you notice anything.

Age-related loss is usually gradual and affects both ears. It cannot be reversed [3].

Congenital and Inherited Deafness

Some cats are born deaf. The best-known pattern involves white coat color. About 80 percent of white cats with two blue eyes will start to show signs of deafness at around four days old because of degeneration in the cochlea, the hearing organ of the inner ear [2]. White cats with one blue eye or with odd eyes have a lower but still elevated risk [1].

This is not limited to mixed-breed cats. In a group of 40 client-owned white Devon Rex cats, sensorineural deafness occurred in about 10 percent, with one-sided and two-sided deafness appearing equally often [5]. In Maine Coon cats with the dominant blue eyes trait, researchers identified a PAX3 gene variant linked to hearing loss and white spotting, a pattern that resembles a human condition called Waardenburg syndrome [6]. A separate gene variant, LHFPL5, has been found in a young cat with both deafness and balance problems [7].

A structural defect called atresia, in which the ear canal does not develop normally, can also cause partial or total deafness from birth [2].

Ear Disease and Blockages

Acquired deafness in older cats often traces back to the ear itself. Chronic outer ear infections, middle and inner ear infections, excess earwax, and damage to the tiny ear bones can all block or disrupt sound transmission [1]. Inflammatory polyps, which are growths in the ear or throat area, can do the same [1].

If your cat has discharge, odor, head shaking, or scratching at the ears, that is a separate problem worth investigating. See ear infections in cats symptoms for what to watch for.

Other Causes

Trauma to the head or ear, certain toxins and drugs, and some infections can damage hearing [1]. A recent report described five people with cat-scratch disease who developed sudden one-sided sensorineural hearing loss, which suggests a possible link between this infection and hearing loss, though more research is needed [8]. Noise trauma is also a recognized cause of acquired hearing loss in animals [3].

Type of Deafness	Typical Cause	Reversible?
Age-related (presbycusis)	Inner ear and nerve degeneration over time	No
Congenital	Inherited genes, white coat and blue eyes, developmental defects	No
Conductive	Wax, infection, fluid, polyps, damaged ear bones	Sometimes, with treatment
Sudden sensorineural	Infection, toxin, trauma, vascular event	Occasionally, depends on cause

How Veterinarians Diagnose Deafness in Cats

Diagnosis starts with observation. Your vet will watch how your cat responds to sound, but this method has limits. In a group setting, a deaf cat can follow the other cats and appear to hear normally [1].

Testing is more reliable after a kitten is 3 to 4 weeks old, when sound responses become predictable [1]. One-sided deafness is very hard to confirm without specialized testing [1].

The most definitive test is the brainstem auditory evoked response, or BAER. This test measures the brain's electrical response to clicks delivered through small earphones. It can detect deafness in one or both ears and can distinguish true deafness from a cat that is simply ignoring you [3].

Your vet will also examine the ear canals with an otoscope to look for wax, discharge, polyps, masses, or a ruptured eardrum. If a middle or inner ear problem is suspected, imaging such as MRI may be recommended. In one reported case of a cat with deafness and balance problems, MRI of the brain was normal, and the cause was found through genetic testing [7].

Treatment Options for Hearing Loss

Treatment depends entirely on the cause.

If the problem is conductive, meaning something is blocking or damaging the sound pathway, there is real hope. Removing wax, treating infection, or removing a polyp can restore some or all hearing [1]. Successful treatment of an ear canal obstruction may improve the associated hearing loss [3].

For sensorineural deafness, including age-related and congenital cases, there is generally no treatment that restores hearing [3]. Cochlear implants are used in human medicine and have been studied in cats, but they are not a standard clinical option for pets [9].

If your cat has an ear infection, your veterinarian will choose an appropriate medication and calculate the dose based on your cat's weight and health. Never use leftover ear drops from another pet or a previous prescription, because some ear medications are toxic to cats if the eardrum is ruptured.

Living With a Deaf Cat: Recovery, Outlook, and Long-Term Management

The outlook for a deaf cat is good. Deafness itself is not painful and does not shorten life. The real risks are safety and stress, and both can be managed.

Keep Your Cat Indoors

A deaf cat cannot hear traffic, dogs, or other dangers. Indoor-only living is the single most important safety step. If your cat already goes outside, transition to indoor life or build a secure outdoor enclosure.

Use Visual Cues

Replace voice commands with hand signals, a flashlight blink, or a gentle stomp on the floor. Cats feel vibrations well. Keep a consistent routine so your cat knows when meals, play, and bedtime happen.

Approach Carefully

Never touch a deaf cat while it is sleeping without warning. Walk into your cat's field of vision first, or place a hand nearby so your cat feels the vibration or air movement. This prevents startle bites and scratches.

Watch for Other Senior Issues

Deafness often shows up alongside other age-related changes. Sensory decline in hearing and vision is nearly universal in aging cats and is often mistaken for cognitive dysfunction or just "normal aging," even though it affects quality of life and behavior [10]. If your older cat also seems confused, restless at night, or less interested in food, ask your vet to check for other conditions. Kidney disease is common in senior cats, and the signs can overlap with what owners assume is just aging. You can read more about kidney problems in older cats and why do older cats get kidney disease.

Keep Other Pets in Mind

A deaf cat may not hear another pet approaching. Supervise introductions and give your cat escape routes and quiet resting spots.

Can Deafness in Cats Be Prevented?

Congenital deafness cannot be prevented in an individual cat, but responsible breeding reduces it. Breeders can test hearing with BAER before breeding, which helps avoid passing on inherited forms [3].

For acquired deafness, prevention focuses on ear health and avoiding injury:

Check your cat's ears regularly for wax, odor, or discharge
Treat ear infections promptly and completely
Avoid putting anything into the ear canal unless your vet instructs you to
Keep your cat away from loud, prolonged noise
Use only veterinarian-approved ear products, since some substances are toxic to the inner ear [1]

Age-related hearing loss cannot be prevented, but early recognition helps you adapt your home sooner.

Limitations and When to Contact a Veterinarian

This article covers general patterns. Your cat's situation is individual, and only a veterinarian who examines your cat can determine the cause of hearing loss and the right next steps.

Contact your veterinarian the same day if you notice:

Sudden hearing loss, especially in a cat that heard normally last week
Head tilt, circling, falling, or loss of balance (these suggest inner ear or vestibular disease) [7]
Discharge, bleeding, or a bad smell from the ear
A swollen or painful ear
A mass or growth visible in or around the ear canal

Seek emergency care now if your cat:

Cannot stand or walk
Has a seizure
Has a head injury
Collapses or seems unresponsive

Schedule a routine visit if you notice gradual hearing loss, increased vocalization, or your cat seems less responsive to sound over weeks to months. Even if the cause turns out to be simple aging, your vet can rule out treatable problems and help you plan for your cat's care.

Frequently Asked Questions

Can a deaf cat live a normal life?

Yes. Deaf cats adapt well and can live full, happy lives indoors. The main adjustments involve safety, routine, and using visual cues instead of voice.

Is deafness in white cats always caused by genetics?

No, but genetics is the most common reason. White cats with blue eyes carry the highest risk, though not every white cat with blue eyes is deaf [1][2].

Can my older cat's hearing come back?

It depends on the cause. If the loss comes from wax, infection, or a polyp, treating the problem may restore hearing [1]. Age-related and congenital deafness do not improve.

How can I tell if my cat is deaf or just ignoring me?

A deaf cat will not respond even to loud, sudden sounds when you are out of sight. A cat with normal hearing usually reacts to a dropped pan or a crinkled bag. Your vet can confirm with a BAER test [3].

Should I get a second cat to keep my deaf cat company?

Not automatically. A deaf cat may not hear another cat approaching and can become stressed. If you do add a cat, choose a calm temperament and supervise introductions closely.

References

Deafness in Cats - Cat Owners. Merck Veterinary Manual.
Deafness. Cornell University College of Veterinary Medicine.
Deafness in Animals - Ear Disorders. Merck Veterinary Manual.
An electrophysiological early marker of age-related hearing loss in the Wistar rat model. Heliyon, 2024.
Sensorineural deafness in purebred white Devon Rex cats. Journal of veterinary internal medicine, 2024.
PAX3 haploinsufficiency in Maine Coon cats with dominant blue eyes and hearing loss resembling the human Waardenburg syndrome. G3 (Bethesda, Md.), 2024.
LHFPL5 splice site variant in a cat with deafness and vestibular dysfunction. Animal genetics, 2025.
Cat-Scratch Disease Associated with Acute Hearing Loss, Israel. Emerging infectious diseases, 2026.
Increased Resting-State Positron Emission Tomography Activity After Cochlear Implantation in Adult Deafened Cats. Clinical and experimental otorhinolaryngology, 2023.
Sensory Decline: Real-World Tactics for Managing Vision and Hearing Loss. The Veterinary clinics of North America. Small animal practice, 2026.