The eye is on a muscle. And they can also pull them into their heads and then pop them back out. A snail tongue is made up of hundreds to thousands of tiny little teeth that have different shapes and sizes depending on the species. So no more complaining about brushing teeth before bed. Humans, we only have 32 of em. That is 13 thousand 968 fewer teeth than the average garden snail. Speaking of which, do they nap? Doctor slyme, as she's called, tells us more.