How Do I Know If My Dog Has Ear Mites? 7 Clear Signs to Watch For

Is your dog scratching their ears nonstop and shaking their head like they just jumped out of a pool? Ear mites could be the reason. The fastest clues are dark, crumbly ear gunk, a lot of ear scratching, and red, sore ears. You can do a quick check at home, but only a vet can confirm it. Here’s how to tell.

What Are Dog Ear Mites Anyway?

Ear mites are tiny parasites that look like miniature spiders (gross I know). They’re barely visible to the naked eye measuring about the size of a pinhead. These little monsters live in your dog’s ear canal, where they feed on blood and tissue. When they reach adulthood, they reproduce and can quickly create a full-blown infestation.

The most common type of ear mite that affects dogs is called Otodectes cynotis. These parasites are highly contagious and can easily spread from one pet to another through direct contact.

How Do You Know If Your Dog Has Ear Mites?

How do I know if my dog has ear mites? The usual signs are lots of ear scratching, frequent head shaking, and dark brown, crumbly discharge that looks like coffee grounds. The ears may also look red and smell bad. A vet confirms ear mites by spotting them under a microscope.

Here are the five biggest signs of ear mites in dogs, from easiest to spot to hardest:

1. Constant ear scratching. Your dog paws at their ears or rubs them on the carpet.
2. Frequent head shaking. It happens many times a day, not just after a bath.
3. Dark, crumbly discharge that looks like coffee grounds inside the ear.
4. Red, sore ears that feel warm when you touch them.
5. Tiny white moving specks. These are the mites themselves, but they’re very hard to see.

One sign on its own doesn’t prove much. Lots of ear problems cause scratching. But if you notice two or more of these together, especially that coffee-ground gunk, ear mites move to the top of the suspect list. Let’s look at each clue more closely.

What Are the Signs of Ear Mites in Dogs?

Ear mites in dogs are tiny parasites called Otodectes cynotis. They live in the ear canal and feed on wax, oils, and skin debris. They’re small, but they make a big fuss. Most symptoms of ear mites in dogs fall into four groups.

Dark, Coffee-Ground Ear Discharge

This is the classic giveaway. Coffee ground ear discharge is dry, dark, and crumbly. It’s a mix of earwax, dried blood, and mite waste. (Yes, gross.)

How to tell it apart from normal wax:

• Normal wax: light tan, small amount, little or no smell
• Mite gunk: dark brown ear discharge, crumbly or crusty, and usually in both ears

If the discharge is yellow, green, or gooey instead, that points more toward an infection. We’ll compare the two later.

Scratching, Head Shaking, and Head Tilt

Mites crawling around inside an ear canal feel about as fun as it sounds. That’s why excessive ear scratching is often the first thing owners notice.

Watch for:

• Pawing at the ears or rubbing the head along furniture
• Dog head shaking many times an hour
• Whining when the ears are touched

A head tilt in dogs is a more serious sign. It can mean the problem has moved deeper into the ear. If your dog holds their head crooked or seems off-balance, call your vet the same day.

Redness, Scabs, and Hair Loss Around the Ears

All that scratching takes a toll on the skin. Look for:

• Ear redness and inflammation inside the ear flap
• Scabs around the ears from scratching with claws
• Hair loss around ears, sometimes spreading toward the eyes or cheeks

These skin changes don’t prove your dog has mites. They do show the itch is strong enough to need attention.

Itching Beyond the Ears (Ectopic Mites)

Here’s a fact most articles skip: ear mites don’t always stay in the ears. Sometimes they wander onto the body. Vets call these “ectopic” mites.

Dogs often sleep curled up with their tail near their head. That gives mites an easy path to the neck, rump, and tail. So if your dog has itchy ears and scratches at their back end, mention both to your vet. It can change how your dog needs to be treated.

How Do You Check Your Dog for Ear Mites at Home?

You can’t diagnose mites at home. You can collect useful clues. Here’s how to check for ear mites at home in about five minutes.

The Cotton-Swab and Dark-Paper Test, Step by Step

1. Gather your tools. You need a cotton ball or cotton swab, a sheet of black or dark paper, a magnifying glass, a flashlight, and a few treats.
2. Pick a calm moment. Sit with your dog in good light and give them a treat to start.
3. Wipe only what you can see. Gently wipe the visible inner ear flap and the opening of the ear. Never push a swab down into the canal.
4. Tap the sample onto the dark paper. Spread out any gunk you collected.
5. Look closely with the magnifier. Wait a minute or two and watch the paper carefully.
6. Read the result.
   • Tiny white specks that move → likely mites
   • Dark crumbs but no movement → possible mites, so get it checked
   • Nothing at all → doesn’t rule mites out
7. Wash your hands and clean up. Ear mites are highly contagious ear mites between pets, so wash anything the sample touched.

[Author note: Insert your own photo of a swab sample on dark paper here. A real photo adds first-hand experience.]

What Do Dog Ear Mites Look Like Up Close?

So, what do dog ear mites look like? Picture a grain of salt that walks. Adult mites are about the size of a pinhead and whitish. Under a magnifier you may see tiny white specks in ear debris crawling slowly across the paper.

Most of the time, though, you’ll see the mess mites leave behind and not the mites themselves. That’s normal. Even vets need a microscope to be sure.

When to Skip the Home Check and Call Your Vet

Skip the DIY test and go straight to when to see a vet mode if your dog has:

• Painful sensitive ears that make them yelp or snap when touched
• Bleeding, swelling, or a strong smell from the ear
• A head tilt, stumbling, or circling
• Symptoms that keep coming back

Poking a very sore ear can make things worse. Let the professionals handle it.

Is It Ear Mites or Something Else?

Itchy ears have many possible causes, and the treatments are different. Here’s how mites compare to their most common look-alikes.

Ear Mites vs. Yeast or Bacterial Ear Infections

The question of ear mites vs ear infections trips up a lot of owners, because both cause scratching and shaking. The discharge is your best clue.

• Mite gunk is dry and crumbly.
• A yeast or bacterial infection usually makes wet, greasy, or pus-like discharge.
• A foul ear odor that makes you step back points more toward infection than mites.

The two problems can also show up together. Mites damage the ear and open the door for germs. That’s why a vet check matters even when you’re fairly sure it’s mites.

Ear Mites vs. Allergies and Normal Earwax

Allergies are actually a more common cause of itchy red ears in dogs than mites. Allergic dogs often lick their paws, chew their skin, and flare up at the same time each year.

Some normal wax is healthy, too. Light tan wax with no smell and no itch is nothing to worry about. Mites tend to bring a sudden jump in itching and that dark, crumbly mess.

Ear Mites vs. Foreign Bodies and Other Skin Mites

Did the head shaking start suddenly right after a walk through tall grass? A grass seed (foxtail) may be stuck in the ear. These usually affect one ear and need quick vet removal.

Other mites can also cause itchy ears. Sarcoptic mange (scabies) often makes the edges of the ear flaps crusty and very itchy. It needs different treatment, which is one more reason to get a proper diagnosis.

How Do Vets Diagnose Ear Mites in Dogs?

Good news: how veterinarians diagnose ear mites is quick and usually painless. Most visits take only a few minutes.

The Otoscope Exam

First, your vet does an otoscope ear canal exam. An otoscope is a lighted tool with a magnifying lens. It lets the vet see deep into the ear canal.

The vet looks for:

• Dark debris and swelling
• Moving mites, which are sometimes visible right away
• Whether the eardrum is healthy

That last point is important. If the eardrum is damaged, some ear medicines aren’t safe to use.

Ear Cytology: Confirming Mites Under the Microscope

Next comes the ear cytology test. The vet gently collects a little debris with a cotton swab. They mix it with a drop of mineral oil and check it for ear mites under microscope. Mites and their eggs are easy to spot this way.

The vet may also stain a second sample. This shows whether yeast or bacteria are causing a secondary ear infection, which is very common in dogs with mites. Knowing this helps your vet choose the right medicine the first time.

What to Tell Your Vet Before the Exam

You’ll help your vet a lot by sharing these details, in this order:

1. When symptoms started and whether they’re getting worse
2. Which ears are affected, one or both
3. Any body itching beyond the ears
4. Whether your dog takes monthly parasite preventatives, and which brand
5. Other pets at home, especially cats

What Causes Ear Mites, and Which Dogs Are at Risk?

Ear mites don’t come out of nowhere. They need a ride from somewhere.

How Ear Mites Spread

Ear mites mostly spread through direct contact between animals. A quick sniff, a shared nap, or rough play is enough.

They can also hitch a ride on contaminated bedding or toys. Mites don’t survive long off an animal, but they can last long enough to find a new host.

Because they’re so contagious, one infected pet often means the whole household is exposed. And yes, that includes your cat.

Higher-Risk Dogs: Puppies, Multi-Pet Homes With Cats, and Boarded Dogs

Any dog can get mites, but some face higher odds:

• Puppies. Ear mites in puppies are common, especially in young dogs from shelters, rescues, or litters.
• Homes with cats. Ear mites are much more common in cats than dogs, so the family cat is often the hidden source.
• Social dogs. Places like dog parks, boarding facilities and grooming salons bring many animals close together.
• Dogs without prevention. Dogs that aren’t on regular parasite protection have less defense.

How Are Ear Mites in Dogs Treated?

The treatment of ear mites in dogs usually works well and doesn’t take long. It follows three simple steps. Always use what your vet prescribes. Doses depend on your dog’s weight, age, and health.

Step 1: Cleaning the Ear Canal

First, the gunk has to go. Your vet will clean the ears and may send you home with an ear cleaning solution. If there’s also an infection, they may choose an antimicrobial ear cleanser instead.

Clean ears let medicine reach the mites. Skip this step and the medicine just sits on top of the mess.

Step 2: Mite-Killing Medications (Spot-On, Oral, Ear Drops)

Next, your vet picks a mite-killer. Common options include:

• Spot-on products applied to the skin between the shoulder blades
• Chewable tablets given by mouth
• Medicated ear drops

Many of these topical and oral medications are the same products used for fleas, ticks, and heartworm. Your vet may use them “off-label” for mites, which is safe under their guidance.

Why the follow-up? Mite eggs can hatch after the first dose. The full mite life cycle takes about three weeks, so treatment has to cover that window. Stopping early lets mites bounce back.

⚠️ Never use livestock dewormers on your dog. Some breeds, like Collies and Australian Shepherds, can have a dangerous reaction to certain ingredients.

Step 3: Treating Every Pet in the Household

This step gets skipped most often, and it’s the reason mites “come back.” Vets advise you to treat all household pets, even the ones who aren’t scratching. Wash bedding and toys in hot water at the same time.

Why Oil, Vinegar, and Peroxide Remedies Can Backfire

It’s tempting to try a home fix, but these can cause harm:

• Oils may smother some mites, but they don’t kill the eggs.
• Vinegar and peroxide sting raw, scratched skin.
• If the eardrum is torn, liquids can reach the middle ear and cause damage.

Get a diagnosis first. It’s faster and safer.

What Happens If Ear Mites Go Untreated?

Ear mites aren’t an emergency, but they don’t go away on their own. Left untreated, problems tend to stack up, roughly in this order:

1. Secondary infection. Damaged skin invites a yeast or bacterial infection.
2. Aural hematoma. Hard head shaking can burst blood vessels and make the ear flap swell like a pillow. This often needs surgery.
3. Middle ear infection. The problem moves deeper and can cause head tilt and balance trouble.
4. Hearing loss. Long-term damage can affect your dog’s hearing.

To get rid of dog ear mites, a veterinarian needs to diagnose the mites and rule out secondary infections, then prescribe a treatment that typically involves thorough ear cleaning and medication, which can be a topical spot-on treatment, oral medication, or injections. You may also need to treat all other pets in the household and clean their environment to prevent re-infestation, as mites spread through direct contact.

Signs of ear mites in dogs include excessive ear scratching, head shaking, and a dark, crusty discharge in the ears that resembles coffee grounds. Other symptoms are a foul ear odor, redness, swelling, scabs, and hair loss around the ears. You might also see tiny, moving white spots, which are the mites themselves.