Are Electric Dragons hard of hearing?

A thought experiment if you will.
Electric dragons are known for using lightning as their breath weapon. With lightning comes thunder, which can be very loud up to around 120 decibels. That upper limit is where immediate damage to one's hearing can occur (it's why I never go to concerts: those events tend to put the volume up to that level). Electric dragons are at the point of origin of that sound every time they breathe their breath weapon.
Naturally, one would assume such dragons would have 'hardier than normal' cochlea's or have some other defense against the sound of their own breath weapon. However, I think it would be kind of interesting if there was a story/world somewhere where electric dragons cornered the market on hearing aids....