What are the common symptoms and treatment options for a dog ear infection with brown gunk discharge?

Common symptoms of a dog ear infection with brown gunk discharge include scratching or rubbing of the ears, redness or swelling, foul odor, and discharge. Treatment options may include cleaning the ears, prescribed ear drops or medications, and addressing any underlying causes such as Allergies or ear mites. It is important to consult a veterinarian for proper diagnosis and treatment.