I'm a first time BP owner, and my boy is about three years old. Sometimes, when I go to touch him, he will make a short sound out of his nose that kind of sounds like he's sucking in air. I know that sounds like this can be a sign of a URI, but I am also aware that BPs may hiss if they don't want to be handled at that moment. This is NOT a sound I hear him make every day, but I want to be absolutely sure that he is not sick. Again, this is a quick and short sound that he will make only after I touch him, it is not a sound that he makes unprovoked.
His tank is always between 75-85 F and the humidity is at a constant 50-60%. After typing this out, I feel kind of silly for asking if he may be sick, but I just want to be sure so that if he is ill, I don't let it progress any further. I appreciate any responses! And just for the record, after he makes this sound I always leave him be- I care for him very much and don't want to stress him out.