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  1. Check out this alligators third eyelid. This nictitating membrane helps to protect their eyes.

    Check out this alligators third eyelid. This nictitating membrane helps to protect their eyes.

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  2. The Third Eyelid Remnant , #ThirdEyelid, #EyeAnatomy, #VisionHealth, #EyeEvolution, #eyecare

    The Third Eyelid Remnant , #ThirdEyelid, #EyeAnatomy, #VisionHealth, #EyeEvolution, #eyecare

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  3. Birds have a third eyelid whose function is to lubricate the eye while maintaining clarity of vision

    Birds have a third eyelid whose function is to lubricate the eye while maintaining clarity of vision

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  5. Joe Rogan vs The COVIDians

    Joe Rogan vs The COVIDians

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  6. The Physical Characteristics of Cats

    The Physical Characteristics of Cats

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  10. Mother cat with his babies

    Mother cat with his babies

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  11. Cute cats playing with air bubbles

    Cute cats playing with air bubbles

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  14. USS Eagles - Nictitating membrane

    USS Eagles - Nictitating membrane

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  15. A Kingfisher diving to catch a fish

    A Kingfisher diving to catch a fish

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  20. Camels have three eyelids to protect themselves from the blowing desert sand.

    Camels have three eyelids to protect themselves from the blowing desert sand.

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  21. the kitten was trying to hang up clothes

    the kitten was trying to hang up clothes

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  22. Crocodile's eyes are an engineering marvel: They are protected by a third eyelid,

    Crocodile's eyes are an engineering marvel: They are protected by a third eyelid,

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  23. Very chill camel enjoys a tasty snack

    Very chill camel enjoys a tasty snack

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  24. 5 Useless Human Body Parts You Don't Need - Evolution Leftovers

    5 Useless Human Body Parts You Don't Need - Evolution Leftovers

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