Interesting, thanks. Was worried. Have two Sceloporus serrifer cyanogenys, (M & F), and one Leiocephalus schreibersii, (M). Had read that the Sceloporus is the only lizard that could actually stand temperatures above 105 for short periods of time. The rest will die. No one is caged; they have their own tables with necessary lizard accoutrements in their own room. We had casement windows put in many years ago; they climb the screens and sticks at the windows. Had worried last week...heat indices had approached 105. And I opted to close their windows and give them the A/C that the rest of the house was using, (stayed around 80 or so in their room). A few days before the heat indices hit the 100's, L. schreibersii was going into his damp sand pit, but the Sceloporus were hanging out in the sun with their little mouths open. Had been spraying all, (these Sceloporus drink infrequently, but fill up like camels), and I was worried about them all. Had also "bathed" them in shallow Tupperware lids. Been at this 41 years, and never found anything regarding heat indices vs. ambient temperature before this.