North American Eastern Box Turtle (Terrapene carolina). Eighty per cent of male wild population have eyes with a red iris.

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North American Eastern Box Turtle (Terrapene carolina). Eighty per cent of male wild population have eyes with a red iris. An example of sexual colour dimorphism or dichromatism.

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Size: 5760px × 3840px
Photo credit: © Joe Blossom / Alamy / Afripics
License: Licensed
Model Released: No

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