Abstract
The hearing of three dogs was tested using auditory brainstem response (ABR) and distortion product oto-acoustic emissions (DPOAE) tests. The three subject dogs included one with known normal hearing, one congenitally deaf dog, and one dog with presbycusis. ABRs were run using a 100-s click stimulus at a repetition rate of 19.7 Hz at 90, 60, and 40 dB nHL. Based on the combined analysis of ABR and DPOAE, differences in canine hearing of dogs with presbycusis and congenital (Waardenburg syndrome) are evident. These results continue to be compared with those of other dogs of known otology and audiology in an effort to develop canine norms for ABR and to readily detect these pathologies in companion animals to assist veterinarians in the diagnosis and treatment of hearing loss in dogs.
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