No rattlers Cubber. I am not really into the vipers, except I like the desert horned vipers and South American bushmasters. Vipers are ambush hunters and tend to just lay around waiting for food. Very lazy. My cobras, and elapids in general, are active hunters and fun to watch cruising their cages looking for food. Problem is, the elapid family have such high metabolisms that they sh#t all the freakin' time; which means more clean-up. But rattlers drive me up a wall with their rattling And I like a more active snake anyways.