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they sleep in the day and hunt at night and that's why those animals have good eyes.
no not as long as you clean it and take it off before you go to sleep unless you buy the ones that you are able to sleep with
Sometimes, yes. I have seen a cat sleep with his eyes open before. It's probably how they keep an eye on their surroundings while they sleep.
phosphenes
Dark circles can show up under your eyes quickly due to a lack of REM sleep or sleep period. The lack of sleep causes the blood vessels under your eyes to burst which cause te darkness under your eyes.
Yes they sleep with their eyes open :)
Some people call them "eyes."
keep your eyes closed,face the wall and think of our favorite things.
No. Kookaburras are not known to sleep with their eyes open.
Yes, dogs sleep with their eyes closed.
No. They close their eyes like us when they sleep.
No ,they sleep with their eyes open