On Monday morning, right before we went to the vet, I noticed Zeeky making a strange sound. Sorta like a light gravely squeak when he breathed. It went away after a few minutes so I thought maybe he just had a booger or something. I asked the doc about it and she said his lungs sounded fine. Yesterday I heard it again, but again it went away after a few minutes. Then this morning he was doing it all morning. Occasionally he'd sneeze and it would quit for a minute then it would come back. But it sounds horrible. I assume he's got a respiratory infection? (from what I've read they don't really get viral colds) He's on antibiotics for the abscess (reason we went to the vet) anyway so should I just run him through the full round and see if it clears up? Or should I take him back to the vet and have him checked out?