It should be that the ear mites present in Teddy's ears pop up and stay on the edge of the ear to form black scabs. The breeder can use ear cleaning solution to clean the edge of the dog's ear and ear canal. The dog's ear canal needs to be cleaned regularly, otherwise it will easily breed mites and bacteria. Breeders can clean the dog's ears when bathing the dog to prevent the dog from scratching the ear and popping it into the hair or home.