I haven't noticed any popping sounds from him what I have noticed is he's hanging around the bottom of his tree which is unusual for him he usually goes to the bottom for morning feeding that's it as now he's just hanging out on the bottom. He starts excessively drooling as soon as his water starts dripping and just lets the water drip all over him as the water runs down his body to his mouth he just drools with it .. So I'm not sure if he's dehydrated from my friend not properly taking care of him also I'm not exactly sure if my friend was feeding him properly she was giving him med. Crickets instead of large & I don't think she took the time to dust them ...