Good morning wadau hope we are all doing great,,, Snakes...... Did you know that.... Snakes don't have eyelids,They don’t have eyelids! This means they don’t blink and have to sleep with their eyes wide open. Instead of eyelids they have a thin membrane attached to each eye to protect them. The membrane is called the ‘brille,’ which in German means glasses. They smell using their tongue, Snakes do have nostrils, but they don’t use them to smell. Instead they have evolved to smell with their tongue and by using their Jacobson’s organ in the roof of their mouth.