I know cock's lower eye lids moves to meet the upper one when it closes its eye. What other animals does this? BTW, "cock-eyed" can mean upside down, I think.
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Actaully there are quite a few animals which actually moves there lower eyelids:
- Most of the birds
- Reptiles(Except Snake)
- Amphibians
answered Aug 6 '14 at 13:26
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$\begingroup$ Are you sure? youtube.com/watch?v=dgh6ABfdlAU shows a hawk's nictitating membrane moving from sidewise. $\endgroup$– qazwsxAug 9 '14 at 21:08
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Nictitating membrane (inner eyelid) of sharks can cover sharks eye as it moves from the upper to the lower eye lid (http://en.wikipedia.org/wiki/Nictitating_membrane).
answered Aug 6 '14 at 13:45