Easily recognized by the orange patch on either side of its head, the bog turtle favors open, groundwater-fed wet meadows and bogs dominated by tussock sedge and grasses. State Ranking Justification Range and Habitat:Bog turtles are found in scattered populations along the Appalachian Mountains in the eastern U.S., with centers of abundance in the northeast (New York and Pennsylvania) and the Blue Ridge Mountains of the Southeast. Meet the Bog Turtle. The bog turtle is one of the smallest turtles in North America. In our region they The bog turtle is North America’s smallest turtle, growing only to 4.5 inches in length. Bog turtles in the northern part of the range are generally less than 100 millimeters (4 inches) in length, while turtles farther south reach sizes of up to 115 millimeters (4.5 inches) (USFWS 2001).