Why is my dog shaking its head a lot?
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Overview
If your dog is shaking its head a lot, it usually means something is irritating the ear or ear canal. Common causes include wax build-up, trapped moisture, a foreign body like grass seed, allergies or an ear infection. You can often spot useful clues at home, but you usually can’t tell the exact cause just by looking.
Things To Check
1. Notice when the head shaking happens. If it starts after walks, swimming, grooming or exercise, that can give a clue about moisture, debris or irritation.
2. Look for redness, swelling, discharge, scabs, heat or an unusual smell around the ear.
3. Check whether your dog is scratching the ear, rubbing the head on furniture or holding the head to one side.
4. See if one ear is worse than the other, or if both ears seem uncomfortable.
5. Gently notice whether your dog reacts when the ear is touched, which may suggest soreness.
6. Think about recent causes of irritation, such as bathing, muddy walks, long grass, new grooming products or changes in diet.
7. Watch for any balance problems, unusual walking, or signs that your dog seems dull or off-colour.
Common Causes
Wax build-up is one of the most common reasons for head shaking, especially if the ear feels dirty or looks darker than usual.
Moisture trapped in the ear after bathing, swimming or wet weather can also make a dog shake its head more than normal.
Ear infections are a common cause too, and they often come with smell, discharge, redness, soreness or repeated scratching.
Allergies can make the ears itchy and inflamed, which may lead to head shaking even if the ear doesn’t look badly affected at first.
Less commonly, a grass seed or other small bit of debris may be stuck in or near the ear and cause sudden irritation.
What To Do
Keep a brief note of when the head shaking started and whether it’s getting better or worse. That helps you spot patterns and gives a vet useful context if you need one.
Only clean the ears if you already know how to do it safely and your vet has previously shown you the right approach. Avoid poking inside the ear with cotton buds or trying to remove anything you can’t easily see.
Dry the outer ear gently after swimming, bathing or heavy rain, and keep an eye on any ongoing dirt or wax so you can spot changes early.
If your dog is otherwise comfortable and the problem is mild, short-term monitoring can be reasonable. If it keeps happening, gets worse or comes with soreness or discharge, it’s sensible to get it checked.
When To Contact A Vet
Contact your vet if the head shaking is persistent, the ear looks painful or swollen, there’s a bad smell or discharge, or your dog seems off balance. These signs can point to an ear problem that needs proper treatment rather than home care alone.
It’s also worth getting advice if the shaking started after a walk in long grass, because a grass seed or other debris may be involved.
Products That May Help
If your dog’s ears need regular checking or gentle cleaning as part of their routine, the Pet Care collection may be useful alongside normal owner care.
Related Questions
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Atlas is here to support owners with practical, easy-to-understand guidance. It is not a substitute for professional veterinary advice. If you're concerned about your animal's health, symptoms worsen, or something doesn't feel right, contact your vet.