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Why do snakes sleep with their eyes wide open?

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Why do snakes sleep with their eyes wide open?
posted Nov 11, 2016 by Samardeep Acharya

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1 Answer

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Snakes have no eyelids, so they can never close their eyes or blink. Instead of eyelids, thin clear membrane cover their corneas, called spectacles or brilles. ...

Although they can not close their eyes, they can close the retinas when they are sleeping.

answer Nov 15, 2016 by Shivaranjini
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