Hello. I got a new Dum's today, and it makes a whistling noise every time I touch it. I originally thought it could be a RI, but I see no other symptoms at all. Then my brother asked an amazingly simple question: Is it just hissing? I've heard hissing from snakes before and it's usually a more intense sound. It's not making the sound any other time, besides when I hold and touch her, however she's super docile. She's currently in shed, so that's another reason I believe that her hissing is plausible. If it IS hissing, it's a very light hissing sound. Any thoughts? Enclosure size: 35" x 18" x 7" No substrate, ATM Temps & humidity: Ambient - 75, Hot side - 88, Humidity - 55% Feeding: Large Rat No enclosure pictures, at the moment.