The phrase I learned in college was thermophilic. They like to get warm, and many herps have an preferred active body temp that's surprisingly high (I'm not at home so I don't have any of my books to check exactly how high). They just have to obtain that heat via behaviors rather than metabolisim. But given that I've found coachwhips out and eating (in shed in one case-that was trippy) in the high 90s a few times in the field...and that I've seen collared lizards basking on rocks when it's 95 degrees ambient air temp...and given that I've seen my kings using a 90 degree hot spot reliably right after eating...I'd believe it. Let 'em get warm.
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We wouldn't have 6 and a half billion people if you had to be beautiful to get laid.

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