Quote Originally Posted by Neal View Post
Interesting. I knew they produced something like that, but I wasn't aware that they're now considered venomous. That's like my little rufous, he doesn't bite or hasn't ever attempted to and i've yet to find any cases of them biting, but he is rear-fanged consider venomous, even though I do not consider him it.
I've got a couple papers on my hard drive regarding studies done on Rufoxin - which is the neurotoxin in rhamphiophis venom..........the conclusions are far from earth-shattering, but they may interest you.

Fry does a nice job of ranking the different colubrids in terms of potential risk on a couple of his threads. The difference between rhamphiophis and thamnophis is that rufous snakes are a marginally better equipped to actually get some juice into you.

I don't have the link handy, but Fry's studies pretty much concluded that with the exception of pantherophis, elaphe, lampropeltis and pituophis - all colubrids are technically venomous.