What would make a 15/16 yr old neutered indoor male cat scruch down and cough after napping? This has gone on for a couple of yrs now and while I have wondered if there's some internal, intestinal but possibly lung related issue, so far various vets have not suggested (or agreed with my Q's any kind of exploratory or even just imaging search. They don't seem to have an answer to my questions and because it doesn't get worse, they kind of do nothing. Am I missing something here? Thx!