A map tree frog (Boana geographica) with its eyes closed, its 3rd eyelid or nictitating membrane covers its eye but allows it to still see threats.

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Size: 6429px × 4291px
Location: Madre de Dios, Peru
Photo credit: © Anton Sorokin / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 3rd, america, american, amphibian, anatomy, animal, anuran, boana, brown, close, closed, de, dios, eye, eyelid, eyes, face, field, fieldherping, frog, geographica, geographicus, herp, herpetology, herping, hiding, hylid, hylidae, hypsiboas, macro, madre, map, membrane, nature, neotropical, neotropics, nictitating, pattern, patterned, peru, peruvian, reticulated, sleeping, south, tree, treefrog, tropical, tropics, tympanum, wildlife