P. obsoletus is found west of the Mississippi River, from eastern and southern Iowa southward through Missouri and
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Rat snakes of the genus Pantherophis are diurnally-active and live in a variety of habitats; some overlap each other. They have adapted to a variety of habitats, including bayou, prairie, and rock outcrops, but they seem t… 展开

Adults of P. obsoletus can become quite large, with a reported typical total length (including tail) of 106.5–183 cm (3 ft 6 in – 6 ft 0 in). It is the largest snake found in Canada. The record total length is 256.5 cm (8 ft 5 in), ma… 展开