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

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

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

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