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Three-toed Box Turtle vs. Common Box Turtle

Both are domed box turtles that shut themselves in a hinged underside. The Three-toed has a plain olive-brown or horn-coloured shell, often with a low keel and only faint yellow lines, usually three toes on each hind foot, and a head and forelegs often bright orange or red; its underside is plain. The Common Box Turtle has a boldly patterned dark shell with yellow or orange blotches, usually four hind toes, and dark marks on the underside.

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Three-toed Box Turtle

Terrapene triunguis

Common Box Turtle

Terrapene carolina
Three-toed Box Turtle vs. Common Box Turtle: comparison sheet with the differences marked

Photographs via iNaturalist under Creative Commons licences; the photographers are credited on the sheet.

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