North American Eastern Box Turtle (Terrapene carolina). Adult male, with red iris to the eye. Stereoscopic or binocular vision.

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North American Eastern Box Turtle (Terrapene carolina). Adult male, with red iris to the eye. Eighty per cent of male wild population have eyes with a red iris. Females have a brown iris; an example of sexual colour dimorphism or dichromatism. Dirty face covered in slime after eating a snail.

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Size: 5616px × 3744px
Photo credit: © Joe Blossom / Alamy / Afripics
License: Licensed
Model Released: No

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