So I got my corn snake Feb. 20 of last year. So far he has been eating good until now. He has turned down a mouse, ate one, killed but didn't eat, and then completely ignored another over the course of 2 1/2 weeks. This isn't the thing I worry most about though. At night as he is taking is laps in the 20 gal terrarium I occasionally hear what sounds like sneezing, and when I hold his head up to my ear I can hear wheezing. Can anyone shed any light on what's going on? There isn't any bubbling and mucus but should I rule out ri? The bedding is zoo med aspen shaving.