Why Does My Dog Keep Shaking Their Head? 8 Common Causes Explained

If your dog keeps shaking their head, it's usually a sign that something is irritating their ears. Sometimes it's something simple like water after a swim. Other times it can be allergies, excess ear wax, an infection or even a grass seed.

In this guide we'll explain the most common reasons dogs shake their heads, what signs to look for and when it's time to see your vet.

Quick Answer

If you've landed here because your dog won't stop shaking their head, the most common causes are:

• Excess ear wax
• Seasonal allergies
• Water trapped after swimming
• Grass seeds
• Ear infections
• Ear mites
• Foreign objects
• Injury

If your dog is in pain, has a swollen ear, a bad smell or suddenly starts shaking their head after a walk through long grass, contact your vet promptly.

Is It Normal for Dogs to Shake Their Head?

A quick head shake every now and then is completely normal.

Dogs often shake their heads after waking up, after playing, after rolling in the grass or after getting wet. It's simply their way of getting comfortable.

What isn't normal is repeated head shaking throughout the day.

If your dog keeps interrupting what they're doing to shake their head, scratch at their ears or rub their face on the carpet, it's worth looking a little closer.

1. Excess Ear Wax

Ear wax plays an important role in keeping your dog's ears healthy. It traps dust, pollen and debris before they travel deeper into the ear canal.

Problems start when too much wax builds up.

Signs include:

• Brown wax
• Sticky discharge
• Mild smell
• Head shaking
• Scratching around the ears

Dogs with floppy ears are particularly prone because less air reaches the ear canal.

2. Seasonal Allergies

Spring and summer are the busiest times of year for itchy ears.

Grass pollen, tree pollen and weeds can all irritate sensitive dogs, and many react through their skin rather than sneezing.

If your dog is also:

• Chewing their paws
• Licking their legs
• Scratching their tummy

allergies may be contributing.

👉 Read next: Why Does My Dog Get Itchy Ears in Summer?

3. Ear Infections

Healthy ears naturally contain bacteria and yeast.

When the ear becomes warm, damp or inflamed, these organisms can multiply and cause infection.

Watch out for:

• A strong smell
• Dark discharge
• Redness
• Pain when touched
• Constant head shaking

If you notice these signs, it's best to arrange a veterinary examination.

4. Swimming

Many dogs love water, but trapped moisture can leave ears irritated afterwards.

Floppy-eared breeds are especially susceptible because the ear canal stays warm and damp for longer.

Drying the outer ear gently with a towel after swimming can help.

5. Grass Seeds

Grass seeds are common during late spring and summer.

Unlike pollen, they can work their way into the ear canal.

Typical signs include:

• Sudden violent head shaking
• Holding one ear down
• Pawing at one ear
• Signs beginning after a walk

Grass seeds should always be checked by a vet.

6. Ear Mites

Although less common than allergies, ear mites can cause intense irritation.

You might notice:

• Constant scratching
• Coffee-ground-like discharge
• Frequent head shaking

Treatment is available from your vet.

7. Foreign Objects

Small pieces of grass, tiny insects or other debris can become trapped inside the ear.

If head shaking starts suddenly and doesn't settle, it's worth having the ear examined.

8. Injury

Rough play, scratches or repeated head shaking can sometimes damage the ear.

If your dog's ear suddenly becomes swollen or painful, seek veterinary advice.

When Should I Be Worried?

Arrange a veterinary appointment if your dog has:

• A bad smell from the ear
• Thick brown, yellow or green discharge
• Bleeding
• Severe pain
• A head tilt
• Loss of balance
• Sudden symptoms after walking through long grass

How Can I Help My Dog at Home?

For mild irritation:

• Check ears after walks.
• Dry ears after swimming.
• Remove loose grass from around the ears.
• Avoid cotton buds.
• Keep hairy ears trimmed if recommended by your groomer.

A Natural Option for Mild Ear Irritation

If your dog's head shaking is linked to mild irritation or excess wax, Ear Stuff is designed to gently support healthy ears.

Made with 100% natural cold pressed plant seed oils, it helps soften built-up wax while soothing irritated ears without alcohol or harsh chemicals.

Simply apply 1–2 drops, massage the base of the ear and allow the oil to spread naturally.

If itchy ears are part of wider skin sensitivities, Food Stuff can be used alongside Ear Stuff to support healthy skin from the inside.

Frequently Asked Questions

Why is my dog shaking their head but their ears look clean?

Not all ear problems are visible. Allergies, trapped moisture or irritation deeper inside the ear canal can all cause head shaking before obvious changes appear.

Why does my dog shake their head after a walk?

Pollen, grass seeds and small pieces of debris are common culprits, especially during spring and summer.

Can swimming cause head shaking?

Yes. Water trapped in the ear can lead to irritation, particularly in dogs with floppy ears.

Should I clean my dog's ears every week?

Not usually. Healthy ears are generally self-cleaning, and over-cleaning can cause irritation.

Can allergies make dogs shake their heads?

Yes. Seasonal allergies are one of the most common reasons dogs develop itchy ears and repeated head shaking.