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

---

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. Face covered in slime after eating a snail.

---

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

Keywords: america, american, animal, animals, box, carolina, chelonia, chelonians, close, close-, color, colour, damp, dichromatism, dimorphism, east, eastern, emydidae, eye, eyes, format, gender, horizontal, identification, iride, iris, landscape, male, north, orientation, pasture, red, reptil, reptile, reptiles, reptilia, reptils, sex, sexual, terrapene, testudinata, testudines, turtle, turtles, wild, wildlife, woodland