A commonn dog behaviour could actually be a sign of a major infection (Image: Getty Images)

A behaviour commonly seen in dogs could actually be the early signs of a major infection that could potentially require surgery. While it is usually normal for a dog to shake their head, especially when petting them or scratching their head, if they're doing it excessively, it could be a sign that they have an ear infection.

An ear infection can be incredibly painful for some dogs and is usually the result of bacteria or yeast inside the ear. However, it could also be due to an underlying condition such as excessive wax, excessive cleaning, ear mites, or a skin allergy.

If left untreated or allowed to get worse, an ear infection may need to be treated with surgery from a vet, and your dog's ear

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