Is there a way to tell if a snake is sleeping?

[Bogertophis]

...Wow that's a cool thing about the pupils, which species of snakes does that apply to? Would a corn snake's eyes do that? ...

Yes, corn snakes have round pupils, and so do most rat snakes & king snakes & bull snakes & glossy snakes, & so on...

[Luvyna]

That's really interesting, I never would have guessed all the snakes with round pupils can also make their pupils slits!

[Bogertophis]

That's really interesting, I never would have guessed all the snakes with round pupils can also make their pupils slits!

No, they've got one or the other kind...round pupils or "vertical" pupils (-slits).

[Luvyna]

OH I just realized I totally misunderstood your first post. Guess seeing MR Snakes' reply and then yours confused me. I somehow thought you meant "their eyes become the shape of the clock's hands at 6 o'clock" (which is a huge stretch now that I think about it LOL) but now I see you mean 6 o'clock as in the location of the round pupil in the eye /facepalm

[Bogertophis]

OH I just realized I totally misunderstood your first post. Guess seeing MR Snakes' reply and then yours confused me. I somehow thought you meant "their eyes become the shape of the clock's hands at 6 o'clock" (which is a huge stretch now that I think about it LOL) but now I see you mean 6 o'clock as in the location of the round pupil in the eye /facepalm

LOL, round pupils sink like a sunset to the 6 o'clock position when snakes are asleep. Don't worry, MR Snakes is an equal-opportunity-confuser...