This questions has always been a come-and-go in my mind. Even though I see my snakes sit there all curled up, not flicking there tongue, and not moving much, I wasn't so sure if they were exactly "sleeping". Since snakes do not have eye lids and cannot shut their eyes, I don't really see how they could sleep and dream (not sure about the dream part, but I think anything that sleeps has got to have some dreams). So, what do you think? Can snakes really sleep, or are they just somewhat dosed off but not really sleeping?