When owners come in reporting that their senior dogs are deaf or losing their hearing, I reach for my iPhone, which has the
PetSnap application—an app that plays sounds such as a crying puppy or an angry, hissy cat to get the attention of a pet while
its photo is being snapped. It is amazing how many dogs' ears perk up or how many dogs cock their heads and turn and look
for the source of the sound. Owners are relieved to find that their dogs' hearing could quite possibly be selective.
Dr. Amy Lacy