Doc recently started acting like his trachea temporarily collapses. You know, when they act like they can't get air and they kind of snort? Last night it was quite distressing for him and I tried to soothe him so he could relax. I've had other dogs with that problem before and am sad to see that Doc has it too. For the most part, with my other dogs, it happened infrequently, but Doc's episode was particularly distressing last night. I'll have to keep an eye on him and hope it doesn't happen again too soon. When I took one of my other dogs in to the vet about that problem, he didn't seem concerned and said it sounds like "reverse sneezing". I don't know about that, it seems like they are having trouble getting air when they do it. I did a little research online last night and they can try medication but it isn't always successful and sometimes they can do surgery.