unicate (Shirley) writes:

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?

Yes, dogs who ride in airplanes during their teens will almost certainly have
hearing loss in their twenties. It is likely to be so bad that they will be
unable to get even a Third Class Airman Medical.

--kyler