Ear Mites In Dogs: Causes, Symptoms, Treatment And More

Dog Conditions, Dogs

Last Updated - February 12, 2025

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Ear mites are a frequent and troublesome problem for dogs, leading to considerable discomfort and irritation. These tiny parasites can lead to painful itching and scratching, sometimes leading to infections if left untreated. Pet owners should be vigilant for signs of ear mites, as early detection and treatment are crucial in relieving their furry friends.

This article will cover what ear mites are, their causes, symptoms, diagnosis, treatment options, and prevention tips to help you keep your dog mite-free.

What Are Ear Mites?

Ear mites, scientifically known as Otodectes cynotis, are small parasites that inhabit a dog’s ear canal, feeding on ear wax and skin cells. Though nearly invisible to the naked eye, these mites cause severe itching, inflammation, and can result in ear infections. Common in dogs, ear mites are highly contagious, spreading quickly through close contact with infected animals in places like kennels, shelters, and multi-pet households.

Causes

Dog's ear affected by mites

Ear mites in dogs typically result from direct contact with an infected animal, such as another dog or pet. These tiny parasites are highly contagious, making environments like multi-pet homes, shelters, and kennels particularly high-risk. Dogs in these settings are more prone to infestations, which lead to intense ear irritation, itching, and scratching.

Symptoms

You may notice a range of visible symptoms if your dog has ear mites. Here’s what to look out for:

Physical signs: Dogs with ear mites frequently scratch their ears and shake their heads. The inner ear may appear red, swollen, and irritated due to scratching.

Visual signs: Ear mites leave behind a characteristic dark discharge that resembles coffee grounds, a mix of ear wax, and mite debris.

Odor: The affected ear may produce a foul odor due to the mites and potential secondary infections.

Behavioral changes: Ear mites cause a high level of discomfort, so dogs may display signs of irritability, rub their head against surfaces, or try to relieve discomfort by scratching or pawing at their ears.

How to Diagnose

A veterinarian can confirm an ear mite infection through several diagnostic steps:

Physical examination: The vet will visually inspect the dog’s ear canals and surrounding skin for signs of an infestation. Dogs’ ear mites often produce dark discharge resembling coffee grounds, inflamed ears, and irritation from excessive scratching. This dark discharge and ear wax buildup and redness can indicate an ear mite infestation.

Ear swab: The veterinarian may collect a sample from the infected dog’s ear canal. This sample is examined under a microscope to detect adult mites and mite eggs directly, which provides a definitive diagnosis.

Otoscope examination: The vet may use an otoscope to examine the dog's ear more closely, checking for additional issues or ruling out other parasites or infections. This tool is especially useful to ensure there is no secondary ear infection or other ear disease.

Treatment

Dog in the vet clinic

There are several treatment options available for dogs with ear mites. Here’s a breakdown of the most common approaches:

Topical treatments: Prescription treatments or over-the-counter ear drops formulated to kill ear mites are often the first choice. These drops work to kill adult mites, barely visible to the naked eye, in the dog’s ear canals and help reduce irritation and inflammation. To treat ear mites effectively, apply these drops daily as directed by your vet. Prescription medications specifically target mites in dogs and are more effective at ensuring the ear mite infestation is fully treated.

Oral medications: Veterinarians may prescribe oral medications as part of a comprehensive ear mite treatment plan. These medications work systemically to treat ear mites and address mite-related symptoms beyond the dog’s ear, such as skin rash or irritation on surrounding skin. Oral medications are often combined with topical treatments to eliminate mites thoroughly throughout the dog’s body.

Ear cleaning: Cleaning your dog’s ear canals before applying treatments is essential to improve the effectiveness of ear mite treatment. By removing ear wax, discharge, and debris, you help ensure medication can penetrate the entire ear canal and reach adult mites. Regular ear cleaning also helps prevent ear mite infestations from recurring, which reduces the risk of secondary ear infections and related complications like skin rash and dog scratching.

Managing the environment: Because dog ear mites are contagious and can spread to bedding, toys, and other surfaces where an infected dog rests, cleaning the dog’s environment is crucial to prevent re-infestation. Wash bedding, clean pet toys, and disinfect the areas where your dog spends time. It is important to treat ear mites in dogs or pets to prevent ear mites from spreading to other dogs or pets in the household.

When treating ear mites, dog owners should hold their pet’s head still to ensure the accurate application of drops or other treatments. It is essential to follow the veterinarian’s dosage guidelines for effective treatment. Because ear mites are contagious, all pets in the household should be treated to prevent re-infestation. While humans rarely catch ear mites, dogs’ ear mites can easily affect other dogs or pets in close contact.

Prevention

Bathing dog

Preventing ear mites is possible with regular care and attention to your pet’s environment. Here are some tips to help keep ear mites at bay:

Regular ear checks: Frequently examine your dog’s ears for signs of ear mites, such as redness, discharge resembling coffee grounds, and unpleasant odors. These symptoms may signal an infestation or the onset of an ear infection. Early detection enables timely treatment of ear mites, helping to prevent the infestation from worsening.

Routine cleaning: Cleaning your pet’s ears regularly helps prevent the buildup of wax and skin oils, which adult ear mites live on and use as food. Removing debris and buildup can make the ear canals less hospitable for mites and reduce the risk of ear irritation and infestations. For dogs prone to ear disease, routine ear care is especially important.

Regular vet visits: Schedule routine veterinary check-ups, which can help diagnose ear mites early or catch ear irritation and other ear conditions before they become severe. Your vet may recommend ear drops or the most appropriate treatment if early signs of ear mites in dogs are detected. Addressing issues early can prevent adult mites from spreading.

Separate infected pets: If a dog shows symptoms of mites in dogs, such as excessive scratching or irritation around the pet's ears, isolate the affected pet until treatment is completed. Mites are highly contagious and can easily spread to other pets in the household. Keeping pets separated during initial treatment helps prevent other pets from catching mites.

Hygiene and environment management: Adult mites can survive on surfaces, so keeping the environment clean is essential. Wash bedding, toys, and other items carrying mites or pet skin oils. Maintaining cleanliness in your home and around your pets reduces the risk of re-infestation.

FAQs

How Long Does It Take to Get Rid of Ear Mites?

Ear mite treatment usually takes one to two weeks, depending on the severity of the infestation and the chosen treatment approach. Completing the full course of treatment as your vet prescribes is essential, as stopping early can allow surviving mites to reinfest the ear. Additionally, cleaning your dog’s environment can help prevent recurrence, ensuring that mites don’t linger in bedding or other resting areas.

Are Ear Mites Contagious to Other Pets or Humans?

Ear mites spread easily between pets, especially dogs and cats. If one is infected, all household pets should be treated to prevent the mites from spreading. Though rare, ear mites can occasionally affect humans, but this is uncommon and mainly a concern for other animals. Treating all pets at the same time helps eliminate the mites and minimizes the chances of them spreading further.

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About the Author

Doctor of veterinary medicine with extensive experience in animal welfare with a strong interest in feline medicine and plans to pursue ABVP-Feline specialty board certification. A key member of many local veterinary associations and avid reader of animal related science journals and studies.