Ear disease is a very common problem in dogs, and most vets working in practice will diagnose it on a daily basis. A dog’s ear canal is an L-shaped tube lined by skin and it culminates at the deepest part with the ear drum. The ear flap (pinna) and canal help to funnel sound waves down to the ear drum for normal hearing to occur. Ear disease in dogs can affect one or both of the ears and can occur in conjunction with skin disease at other body sites too. For this reason, vets frequently examine the whole body even though the ears seem to be the main problem.