Canine ear infections are most commonly caused by bacteria or yeast. Ear mites, excessive hair, moisture or wax, foreign bodies, allergies, and hypothyroidism can all be contributing factors in the development of an ear infection. Because the ear canal in dogs is mostly vertical (unlike a human ear canal that is horizontal), it is easy for debris and moisture to be retained in the ear canal. In acute cases of your pet showing symptoms of an ear infection please have your pets ears checked by your veterinarian. Chronic ear infections can be supported by using whole food supplements that support the tissue functions involved.