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Unique third eyelid: Nature's tiny shield for pets and wildlifeBirds, reptiles, amphibians ... However, we do have a remnant called the plica semilunaris, which helps with tear drainage. The third eyelid is a fascinating anatomical feature in many animals.
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Third eyelid: A hidden shield in animals' eyesBirds, reptiles, amphibians ... However, we do have a remnant of this feature called the plica semilunaris, which assists ...
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