Are Cat Ear Mites Jumping to Other Furry Friends?

What Are Cat Ear Mites?

Cat ear mites are tiny parasites that live in the ear canal of cats. Scientifically known as Otodectes cynotis, these mites are barely visible to the naked human eye at just 0.5-0.6 mm in length. Despite their small size, ear mites can cause major irritation, inflammation, and damage in the ears of cats if left untreated.

Ear mites are highly contagious to other cats and can spread rapidly between animals. While they do not often affect human health, ear mites will quickly lead to an inflamed, uncomfortable, itchy ear infection in cats if the infestation grows unchecked.

Cats of all ages can be affected by ear mites, though kittens and cats that live in multi-cat households or shelters seem to be most prone to infestation. Adult ear mites can live for up to three weeks in a cat’s ear canal, laying eggs and contributing to the colony’s growth.

How Do Cats Get Ear Mites?

Ear mites are highly contagious among cats. The primary way cats become infected with ear mites is through contact with other infected cats. Ear mites can spread rapidly between cats in multi-cat households or shelters through activities like play, grooming, and snuggling.

According to the Cornell Feline Health Center, “Ear mites are extremely contagious, moving from one cat to another on close contact and eventually making their way to the ear” (source).

Kittens are more susceptible to ear mites than adult cats. Their immature immune systems have a harder time fending off the mites. Ear mites can also spread through shared bedding, sleeping areas, and grooming supplies.

While ear mites prefer to live on cats, they can sometimes jump to dogs and rabbits. But they don’t survive long away from their preferred hosts. In general, ear mites need a cat host to thrive and don’t live long in the environment.

Signs of an Ear Mites Infection

There are several telltale signs that indicate your cat may have ear mites:

One of the most notable signs is the presence of black debris inside the ears that resembles coffee grounds. According to, “Ear mites live and breed predominantly in the ear canal. As they feed, they cause irritation, resulting in the cat producing dark reddish-brown crumbly detritus that resembles coffee grounds” This dark discharge is a hallmark of an ear mite infection.

cat with crumbly dark debris resembling coffee grounds in ears

In addition to the coffee ground-like debris, your cat may shake their head frequently or scratch at their ears trying to get relief from the itching and discomfort caused by the mites. The scratching can lead to hair loss around the ears. Ear mites can also cause redness and inflammation inside the ear canal.

According to, other signs include “having red and inflamed ears caused by extra wax and debris” So inflammation and excess wax are also indicative of an infestation.

Overall, black discharge resembling coffee grounds, head shaking, ear scratching, hair loss around the ears, redness, inflammation and excess wax buildup are all common signs to watch out for.

Are Cat Ear Mites Contagious to Other Cats?

Yes, cat ear mites are very contagious to other cats. Ear mites spread easily through close contact between cats, especially when cats groom each other, sleep near each other, or share bedding. The mites can quickly transfer from one cat to another during these interactions. According to the Cornell Feline Health Center, ear mites are “extremely contagious,” moving from cat to cat when they are in close contact (source).

In addition to spreading through direct contact, ear mites can also be transferred via shared grooming supplies or bedding. The mites can survive in these items, allowing them to infect any other cats who share these items. For this reason, it’s important to discard or thoroughly disinfect any shared grooming tools or bedding if a cat has ear mites.

Ear mites are not just contagious to other cats – they can also spread to dogs. So if you have both cats and dogs in your home, an ear mite infection can pass between them through close interactions. Keeping cats and dogs separated can help reduce the spread of mites if one pet is infected.

Treating Ear Mites in Cats

Once a veterinarian diagnoses a cat with ear mites, treatment can begin quickly and easily. The most common treatments for ear mites in cats are medicated ear drops or oral medications prescribed by a vet.

Typically, a vet will recommend treating all cats in the household to prevent them from getting reinfected. This may involve applying ear drops or giving oral medication to all feline household members.

According to the Cornell Feline Health Center, common prescription ear drops to treat ear mites contain ingredients like pyrethrins, fipronil, selamectin, imidacloprid, ormoxine, and thiabendazole ( These products kill the ear mites and any eggs left behind.

Oral flea medications containing drugs like selamectin, moxidectin, or sarolaner can also be prescribed by vets to kill ear mites internally. These are typically given monthly to treat and prevent new infestations.

It’s also important to thoroughly disinfect any bedding, blankets, and grooming tools your cat uses. This will help prevent reinfection and stop the spread to other feline family members.

Preventing Ear Mites in Cats

There are several steps cat owners can take to help prevent ear mites in their feline companions:
ways to prevent ear mites in cats

Avoid Contact with Strays/Ferals
Ear mites easily spread between cats, so it’s best to limit a pet cat’s exposure to unknown stray or feral cats that may carry mites. Keep cats indoors or only allow supervised outdoor time (PetVet).

Don’t Share Grooming Tools
Items like combs and brushes can transfer ear mites from cat to cat. Each feline should have their own set of grooming supplies (Westchester Vet).

Clean Bedding Regularly
Mites can live for several days in bedding and fabric items. Frequently wash cat beds, blankets, pillows, and other items your cat contacts (Cornell).

Check New Cats for Signs
When introducing a new cat to a home with other pets, have a vet examine them for ear mites before allowing contact. Quarantine new cats initially.

Are Cat Ear Mites Contagious to Humans?

Cat ear mites are extremely unlikely to be transmitted to humans. According to Healthline, “Animal-to-human transmission is unlikely, but it can happen.” The mites cannot complete their full lifecycle on human skin and will die off quickly. At most, some minor skin irritation may occur if ear mites from an infected cat come into contact with human skin.

ear mites unlikely to transfer from cats to humans

The mites prefer to feed on the wax and oils produced inside a cat’s ear canal. Human ears do not provide the right environment for the mites to thrive. While close contact with an infected cat can potentially transfer some mites temporarily, they cannot reproduce or cause an infestation in humans.

Overall, cat ear mites are considered very low risk for human transmission. With prompt treatment of the infected cat, any mites that may have transferred to a human will die off rapidly on their own.

Ear Mites vs. Ear Infections in Cats

While they can sometimes be confused, ear mites and ear infections in cats are distinct conditions with different causes and symptoms:

Ear infections are typically caused by bacteria or yeast, leading to inflammation and swelling of the ear canal. Signs of an ear infection include head shaking, reddened ears, pain, and discharge from the ears. Ear infections also frequently cause a foul odor from the ears.

In comparison, ear mites are microscopic parasites that live on the surface of the ear canal. Ear mites don’t directly cause swelling or discharge, but rather lead to intense itching, scratching, and the accumulation of a dark crumbly debris made up of mites, skin cells and dried blood. This debris is a telltale sign of ear mites.

However, ear infections can sometimes result secondarily from an untreated ear mite infestation. The inflammation and scratching allow bacteria to take hold and worsen the irritation. Thus, ear mites are considered a common cause of ear infections in cats (VCA Hospitals).

To distinguish ear mites from an infection, a veterinarian will examine the ear canal with an otoscope and may take a sample of the debris to view under a microscope. Proper diagnosis is key, as treatment will depend on whether mites, bacteria or yeast are causing the problem.

When to See a Vet for Cat Ear Issues

If your cat is showing signs of a potential ear infection or ear mites, it’s important to have them seen by a veterinarian. Some key signs that warrant a vet visit include:

Persistent head shaking, scratching, or debris in the ears. This is a common sign of discomfort associated with ear problems like mites or infections. According to, scratching or head shaking can indicate irritation in the ear canal.

Redness, swelling, or discharge from the ears. These can all be signs of inflammation or infection in the ear canal, as noted by Any abnormal fluid or swelling is not normal and requires veterinary attention.

Loss of balance or head tilt. A head tilt or balance issues like stumbling or disorientation can sometimes indicate an inner ear problem, according to This requires prompt vet examination.

Ear hematoma. Also called an “auricular hematoma,” this is a swollen, fluid-filled mass that develops on the outer ear flap. It requires veterinary treatment to prevent permanent deformity of the ear.

A vet exam allows diagnosis of the underlying cause and appropriate treatment. Leaving ear issues unchecked can lead to permanent damage and ongoing discomfort. It’s important to have your cat’s ears evaluated promptly if any abnormal signs develop.

Outlook for Cats with Ear Mites

With prompt treatment, the prognosis for cats with ear mites is excellent. Ear mites are easily treated with topical medications prescribed by a veterinarian. Complete eradication of the mites is usually achieved after one or two treatments (Cornell Feline Health Center).

cats recovering from ear mites after treatment

However, if left untreated, an ear mite infestation can lead to bacterial or fungal infections of the ear canal, as well as damage from scratching at irritated ears. These secondary complications can be painful and difficult to treat (Matthews Vet).

Even after treatment, cats remain susceptible to ear mites throughout their lives. Reinfestation is common, especially in multi-cat households where ear mites can spread between cats. For this reason, ongoing monitoring and prevention is important.

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