Eastern Hognose Snake
Heterodon platirhinos • Squamata, Serpentes, Colubridae, Dipsadinae, Heterodon, Heterodon platirhinos
Eastern North America, ranging from southern Ontario in Canada down to Florida, and west to Texas, Kansas, and Minnesota.
Look up Eastern Hognose Snake in the Snake Encyclopedia →Family
Squamata, Serpentes, Colubridae, Dipsadinae, Heterodon, Heterodon platirhinos
Conservation
Listed as Least Concern on the IUCN Red List. However, local populations face declines due to habitat loss, road mortality, and human persecution caused by misunderstanding its defensive displays.
Physical Description
Features a stout body with strongly keeled dorsal scales and a sharply upturned rostral scale at the tip of the snout. The coloration is highly variable, but this specimen displays a light grayish-tan background with dark brown or black squarish dorsal blotches flanked by alternating lateral spots. The neck region can be flattened into a cobra-like hood, as seen partially in this image.
Size & Dimensions
Specimen shown appears to be a juvenile or small subadult, approximately 10 to 14 inches long. Adults typically average 20 to 33 inches (50 to 84 cm) in total length, with maximum recorded sizes reaching around 45 inches (115 cm).
Habitat
Prefers areas with loose, sandy soil suitable for burrowing, such as open woodlands, pine forests, fields, meadows, river valleys, and coastal dunes.
Diet & Feeding
Specializes in amphibians, particularly toads (Anaxyrus species), but also consumes frogs, salamanders, and occasionally small rodents, invertebrates, or lizards. Uses its specialized upturned snout to dig out prey buried in soil.
Reproduction
Oviparous species. Females lay clutches of 10 to 30 white, leathery eggs (sometimes up to 60) in early summer, typically in underground nests or loose soil. Eggs hatch in late summer or early fall after an incubation period of 50 to 65 days.
Look-alikes
Often confused with pygmym rattlesnakes (Sistrurus spp.) or copperheads (Agkistrodon contortrix) due to its stocky build and blotched pattern. It is distinguished by its distinct upturned snout, round pupils, absence of facial heat-sensing pits, and unique hooding behavior.
Conservation Status
Listed as Least Concern on the IUCN Red List. However, local populations face declines due to habitat loss, road mortality, and human persecution caused by misunderstanding its defensive displays.
Cultural Significance
Famous among naturalists and reptile enthusiasts for its dramatic defensive behaviors, which include flattening its neck into a hood and hiss loudly, followed by playing dead (thanatosis) by flipping onto its back with its tongue hanging out.
Notable Features
Exhibits a modified upturned rostral scale used for digging up buried prey and burrowing into loose substrate. Renowned for its theatrical multi-stage defense mechanism involving hooding, bluffed strikes, and feigning death.