Cattle Earmites
While studying hearing in cattle, we discovered that most cattle have a serious earmite infection that affects their hearing.
Heffner, R. S., & Heffner, H. S. (1983).听Effect of cattle ear mite (Raillietia auris) infestation on hearing in a cow.听Journal of the American Veterinarian Medical Association, 182, 612-614.
Heffner, R. S., & Heffner, H. E. (1983).听Occurrence of the cattle ear mite (Raillietia auris) in Southeastern Kansas.听The Cornell Veterinarian, 73, 193-199.