I've been noticing with my sub-adult and adult ball pythons, I will sometimes hear a whistle noise when they breath. I don't think it's RI infection because I've kept a close eye and I see no mucus or bubbles, I have checked the inside of the mouth and it looks ok as well. Again I only notice this on my larger ones, none of my smaller babies. Is this normal? I've read that it could be stuck shed, or water in the nose etc. However I don't think it's any of those things. Has anyone else experienced this with there bigger bp's? I have them in rack setups, 90 hot spot, humidity 50-60% (higher during shed).
Any input would be great.