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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. USS Eagles - Nictitating membrane

    USS Eagles - Nictitating membrane

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  6. Joe Rogan vs The COVIDians

    Joe Rogan vs The COVIDians

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  10. The Physical Characteristics of Cats

    The Physical Characteristics of Cats

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  12. 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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  13. the kitten was trying to hang up clothes

    the kitten was trying to hang up clothes

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  14. Mother cat with his babies

    Mother cat with his babies

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  15. Cute cats playing with air bubbles

    Cute cats playing with air bubbles

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  16. 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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  17. Dog Facts You Never Knew!🐕‍🦺🦴🐕🐩🐶#dogs #dogfacts #petcare #pets #doglover #doglovers #dogsofinstagram

    Dog Facts You Never Knew!🐕‍🦺🦴🐕🐩🐶#dogs #dogfacts #petcare #pets #doglover #doglovers #dogsofinstagram

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  18. 18 AMAZING Facts to Blow Your Mind You Didn't Know

    18 AMAZING Facts to Blow Your Mind You Didn't Know

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  19. Camels have 3 eyelids - Here are 10 interesting facts about camels.

    Camels have 3 eyelids - Here are 10 interesting facts about camels.

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  20. 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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  23. Diagnose Conjunctivitis in Dogs

    Diagnose Conjunctivitis in Dogs

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  24. Caiman lizard is a mystery to researchers and scientists

    Caiman lizard is a mystery to researchers and scientists

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