Cause: It may be caused by excessive ear wax or accumulation of yellow ear wax in the ear canal due to seborrheic dermatitis. The ear canal of poodles is narrow, so this disease is particularly common. . Poodles and Joseph Terriers have long hair, so it is easy to block the ear canal. The ear wax adheres to the hair and accumulates into clumps, becoming a gathering place for bacterial reproduction. As for some elderly dogs being deaf, that is a natural rule.
