Justin,

I saw some things the last couple of years with wild Mexican Hogs that lead me to believe they DO like access to some hot temps. These observations were made at 4000' elevation where the average night time low is 65 during the _summer_.



I saw wild Hogs basking (sitting and soaking it up) on roads with a surface temp of up to 111°F.

I saw wild hogs on the road when the surface was over 111°F, but they were moving (not sitting - not basking).



Remember that most of these snakes have solid black (or nearly so) bellies.



Eastern Hognose here in Bexar county are quite different, often found about when air temps are in the 50's!



I think you have to look at each animal as a product of it's environment in order to understand how to best provide for that animal. In short, my captive Mexicans do much better with a (hotter) hot spot than my other colubrids.
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http://www.hcu-tx.org

http://www.kingsnake.com/mexicana/

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