Well, there hasn't been an experiment on it, so I'm thinking I'm going to go ahead and try it. There has to be another reason why they can tolerate cold and emerge from their dens before other species of snakes. I mean, there's exceptions to everything. Take leatherback seaturtles and tuna! I know there's a difference in environments, but both of those species can generate heat and are from so-called "cold-blooded" orders!