"Shirley" wrote in message
...
"C J Campbell" wrote:

Anything that can stand their barking is not
likely to suffer hearing loss from a mere airplane.

That's debatable. You likely wouldn't suffer hearing loss from your own
yelling
either! But as a teenager, I remember reading about studies showing how
listening to our music at the volume and for the duration we listened to
it
would eventually cause hearing loss, so doesn't it follow that prolonged
exposure to the noise of an airplane engine from inside the cockpit could
do
the same? ... and God knows dog's ears are more sensitive than human ears.
Some
veterinarians say it wouldn't be a problem; others say they should have
protection just like we do. Guess it boils down to what you and your dog
are
comfortable with.

Exposure to prolonged engine and propeller noise definitely will cause
hearing loss in humans, just as prolonged exposure to rock and roll will.
Dogs, however, can and do create noise that is just as loud and prolonged
without any apparent hearing loss on their part, despite the fact that
humans exposed to dogs' barking can lose their hearing.

Dogs can hear higher frequencies than we do, but it is doubtful that their
hearing is more sensitive than that of humans. Most dogs, in fact, do not
appear to hear all that well. It is too easy to sneak up on them, for
example, if you do it from downwind. They will not respond to whispered
commands. Dogs rely on their sense of smell more than anything else.

Unfortunately, there don't appear to be any serious studies measuring
hearing loss in dogs due to noise hazards. Anything veterinarians have to
say in this regard may be no better informed than what any dog owner would
say. It is all based on speculation and anecdotal experience.