Your dog’s ears can give you useful clues about their health status. A quick glance during grooming may reveal changes in colour, wax, smell, or sensitivity before a problem becomes harder to ignore. Changes in their behaviour, such as them repeatedly shaking or scratching their ears, can also hint at an underlying ear problem.

Knowing what is normal for your dog makes unusual changes easier to spot. It also helps you decide when basic care may be appropriate and when your dog needs veterinary attention.
What a Healthy Dog’s Ears Should Normally Look Like
The skin inside the ear flap shouldn’t appear inflamed, and your dog should allow you to touch their ears without reacting as though the area is painful.
A little light brown wax can be normal. Wax helps collect debris, and its presence alone doesn’t mean your dog has an ear problem. The amount can vary between dogs, so it is useful to become familiar with your dog’s usual appearance.
Smell is another useful clue. Your dog’s ears shouldn’t have a strong or unpleasant odour. If you begin noticing a pungent smell alongside discharge, redness, or itching, arrange a veterinary exam.
What Buildup of Earwax and Dirt Signals
Pay attention if your dog suddenly has much more earwax than usual or if its colour or texture changes. Dark brown wax, yellow discharge, pus or crusting can indicate an ear problem. You may also notice that one of your dog’s ears looks much dirtier than the other. If the difference persists or appears alongside redness, itching, pain or an unpleasant smell, contact your vet.
You don’t need to clean your dog’s ears on a fixed schedule unless your vet recommends it. Cleaning them too often can irritate the ear canal, especially if there is little wax or debris to remove. Your vet can advise you on how often to clean your dog’s ears if they tend to accumulate wax or have had ear problems before.
If your dog needs routine ear cleaning, choose a product made specifically for dogs. Pup Labs, for example, produces K9 EarClear for removing wax and debris from dogs’ ears. You should also avoid inserting cotton buds into the ear canal because they can push debris farther inside and damage delicate structures.
Dog-specific products vary in their formulation and intended use. If you are comparing ear-care options, Pup Labs provides information about K9 EarClear and its intended use for wax, itching and irritation. Check with your vet before putting any cleaner into an ear that is red, painful, inflamed or producing unusual discharge.
Redness, Odour and Discharge Are Also Warning Signs
If the skin inside the ear becomes red or swollen, inflammation may be present. Infections, allergies, parasites and other sources of irritation can all cause these changes. You may also notice that the opening of the ear canal looks narrower than usual because of swelling.
Discharge deserves attention too. Thick material, pus or a sudden increase in wax may accompany an infection, particularly when there is also redness, itching or an unpleasant smell. Although wiping away visible debris can clean up the area temporarily, it will not address the underlying cause.
Your vet can examine the ear canal and eardrum and test a sample of the discharge when necessary. The results can help identify bacterial or yeast infections and rule out other possible causes. Avoid using medication left over from a previous ear problem. Similar symptoms can have different causes, and the treatment that helped before may be unsuitable this time.
Other Signs of Discomfort
Sometimes behaviour changes before you notice anything unusual inside the ears. Repeated head shaking, pawing at one side of the head, rubbing the ears on furniture or pulling away when the area is handled can all suggest discomfort.
A few head shakes after bathing or swimming may simply mean that water has entered the ear canal. If the shaking continues, especially alongside redness, pain or an unpleasant smell, take a closer look. Sudden irritation affecting one ear can also occur when something such as a grass seed becomes lodged inside.
Balance problems and a persistent head tilt require closer attention. Problems affecting the middle or inner ear can interfere with balance and coordination. Contact your vet promptly if you notice difficulty walking, loss of balance, marked pain or a persistent head tilt.
When Your Dog Experiences Recurring Ear Problems
Repeated ear inflammation sometimes stems from an underlying skin condition. Food or environmental allergies, for example, can leave their ears itchy and inflamed while causing symptoms elsewhere on their body.
If the same problem keeps returning, look for patterns beyond the ears. Paw licking, itchy skin, redness on other areas of their body, or flare-ups at particular times of year can provide useful clues for your vet. Repeatedly treating the ears without identifying the underlying trigger may allow the problem to return.
Anatomy can influence susceptibility as well. Research from the Royal Veterinary College found that dogs with hanging ear flaps and certain breeds have a higher risk of developing ear infections. If your pet has experienced ear trouble before, checking their ears regularly can help you notice changes early.
When to Contact Your Vet
Arrange a veterinary examination if you notice persistent redness, swelling, pain, an unpleasant odour, unusual discharge, repeated scratching or frequent head shaking. A head tilt, balance problems or severe pain call for more urgent advice.
At home, compare both ears during routine checks. Get familiar with the usual amount and appearance of wax so that an increase or change in colour is easier to recognise. You do not need to keep the ears completely free of wax, and cleaning may be unnecessary when they look healthy and your vet has not advised it.
Regular checks give you a useful sense of what is normal. If the appearance, smell or behaviour around the ears changes, you can recognise the difference sooner and seek veterinary advice when needed.
References
- Royal Veterinary College. (2021). Now listen ear: New RVC research reveals the dog breeds most affected by ear infections.