Well, yeah, I figured being an older dog, she was probably getting a UTI. What I guess I should have stated is, have you ever heard of this happening after getting treated for "allergy ears" and a slight (at that time) ear infection? Do you think this loss of hearing could be just temporary, or a permanent thing? Her hearing was amazing just 2 1/2 weeks ago, so we were thinking it was related to treatment. But if her infection is much worse, could that cause hearing loss, and would that be temp. or permanent? Could these ear drops kind of build up and be gunky ( hope this doesn't sound too stupid) and maybe clog the ear canal, or maybe swelling due to worse infection, or what? I know this is hard when you can't examine her. But golly, I never heard of this happening.