Hi All, Dagger, our 5.5ft common Columbian boa, has been whistling and wheezing lately. This has been on for awhile, but there is no sign of any discharge/bubbling from his nose/mouth. He seems to really only wheeze/whistle when we're handling him. We'll bring him out and about with us, and he'll just sit on our shoulders, then start whistling, after not whistling for the first while we've had him out. The wheezing I only noticed yesterday. We took him out of his tank to clean it, and I was holding him. I would lift on his neck/mid body and tail, which is the way we've always held him, and suddenly like he was wheezing. He opened his mouth once or twice to breathe as well. It almost was like he was straining to get the air out of him, but we don't hear it when he's just in his terrarium at all. We're considering a vet trip, but the first time we heard the whistling was about 3 months ago. It didn't seem serious until the wheezing came about. Once we put him back into his terrarium he was fine. We sit right beside him and he has a screen top, so we'd definitely be able to hear it. Dagger is about 4 years old, I believe. Any help?