Quote Originally Posted by adamanteus View Post
I would also say T. sirtalis (parietalis), if we're talking survival of extreme cold, but I'm sure some of the southern and Mexican species have to endure the opposite extreme in climate, and probably a wider range of predators.
Predators including humans here, they've nearly killed off all of the ribbon snakes to where I'm lucky if I see one adult one a year. I do usually see the cute babies outside though.