Question: my dog's ear is blown up like a balloon?
Answer: Aural (Ear) Hematoma in Dogs and Cats Head shaking is usually involved in creating an aural hematoma. A large accumulation of blood under the skin makes the ear flap blow up like a pillow creating a thick, soft, heavy ear flap. The dog or cat senses this and shakes the ear even more creating trauma to the ear flap.