Well Im Usually Not Home For Most Of The Day so I Wouldnt Know If He Does It Then, But It sounds Kind Of Like When Your Nose Is Stopped Up and It Makes That Squeak. For Heat i Use A Basking Lamp And At night A Heat Mat Stuck On The side Of The Cage. there Are Tempature Guages on The Side ( I Need To Get New Ones Cause These SUCK) But They Stay about 81 Degrees and i Havent been able to keep Up Humidity So Its about 45