My Jurassic milk-snake, Puff, (who has never missed a meal!) has rejected his last two meals in a row. He would 'attack' his f/t rat pup as normal, and then just leave it there. I double checked his temps - basking spot averages about 93°F, cool side runs about 79°, night-time lows are around 74° (with one night last week dropping to 72° - I don't know how that happened, since ambient house temp is 74° or warmer, and the herp room where he is housed usually runs about 76° at night, 81° by day.) I have since added a supplemental black heat lamp for night-time heat, just in case. He has been slightly more active than is normal lately. I'm wondering if he is maybe just becoming sexually mature? I don't know if these guys go through any kind of season or not. He is about 2 years old, pooping normally, humidity is about 35-40%, just shed last week. Maybe I'm being a little paranoid, but I will be keeping a close eye on him. Already pulled him out for a listen, and thought I heard very faint breathing/wheezing (?) when he was moving around - he would not hold still at all. I know sometimes with my BP, they do what I call an "exertion wheeze" when they gasp a little when they are really exerting themselves. Puff was making just such a faint sound while he was moving around a lot. Hard to get a basis of comparison for his resting breathing since he wouldn't hold still at all, and I practically had to stick his head in my ear to hear it, it was so faint. No bubbles, popping, whistling, or discharge from the nose or mouth. I'm contemplating taking him to the vets tomorrow afternoon, just to be sure, as we are going out of town for the weekend. Thoughts or opinions?