I believe a shark sleeps with one eye open.
An owl blinks one eye at a time
it has one eye and its HUGE! -P.S. it watches you sleep...
An owl blinks one eye at a time
Dolphins sleep closer to the surface of the water. They always sleep with one eye open and one eye closed and half of their brain working to spot any predators. They keep their blowhole above the water so they can breathe.
Dolphins and whales let one half of their brain sleep at a time. This allows them to keep one eye open to watch for danger. They also can still surface to get air, which they couldn't do if they were all the way asleep
Your animal is the eye-eye.
Sleep with one eye open
It means you have one eye open. If you mean the idiom "sleep with one eye open," it means that you are staying alert at all times in case of disaster.
they can sleep long with one eye open -they'll drown if both are closed also their eye is open to sense danger or they'll die.
every dolphin sleeps with one eye open.
keep one's eye on the prizean eye for an eyesleep with one eye openkeep your eye on the ballgive someone the evil eyehit the bull's eyehave a bird's eye viewget some shut eye (sleep)turn a blind eye to
At night dolphins will sleep with one eye open close to the surface so that they can breathe when they need oxygen. They leave one eye open so that they can look out for danger while they rest one half of their brain. During the night they will alternate which eye they have open.