Eastern Hognose Snake
Heterodon platirhinos • Order: Squamata, Suborder: Serpentes, Family: Colubridae, Subfamily: Dipsadinae, Genus: Heterodon, Species: H. platirhinos
Eastern half of the United States, from southern New Hampshire and southern Ontario to Florida, and west to Texas, Kansas, and South Dakota.
Look up Eastern Hognose Snake in the Snake Encyclopedia →Venomous Status
Mildly venomous (Rear-fanged/Opisthoglyphous); they possess enlarged teeth at the rear of the maxilla used to subdue toads.
Danger Level
Harmless; they almost never bite humans, even when handled. They prefer complex defensive displays over biting.
Family
Order: Squamata, Suborder: Serpentes, Family: Colubridae, Subfamily: Dipsadinae, Genus: Heterodon, Species: H. platirhinos
Conservation
IUCN Red List: Least Concern. However, they face threats from habitat fragmentation, decline in toad populations, and human persecution due to their cobra-like defensive stance.
Physical Description
Thick-bodied with a characteristic upturned snout. This specimen is a melanistic (solid dark) individual, which is common in many populations. Typically have keeled scales and a wide head. Eyes have round pupils.
Size & Dimensions
Typically 51-84 cm (20-33 inches) in length; maximum recorded length is approximately 115.6 cm (45.5 inches). This specimen appears to be an adult.
Habitat
Prefers areas with sandy soil for burrowing, including open woodlands, forest edges, coastal scrub, and grasslands. Rarely found in heavy clay soils due to specialized digging behavior.
Behavior & Temperament
Famous for dramatic defensive displays including neck-spreading (cobra-like), loud hissing, and 'playing dead' (thanatosis) by flipping onto its back with mouth open and tongue lolling.
Diet & Feeding
Highly specialized predator of amphibians, specifically toads (Bufo/Anaxyrus). They use their upturned snouts to dig for prey and their rear fangs to 'deflate' inflated toads.
Reproduction
Oviparous (egg-laying); females typically lay 8-40 eggs in early summer, which hatch in late summer or early autumn.
Venom Profile
Amphibian-specific mild venom; possesses some proteolytic properties but is not considered medically significant to humans.
Look-alikes
Often confused with Pigmy Rattlesnakes (Sistrurus miliarius) or Cottonmouths (Agkistrodon piscivorus) due to their thick bodies and defensive puffing. Distinguished by the sharp upturned rostral scale (snout).
Conservation Status
IUCN Red List: Least Concern. However, they face threats from habitat fragmentation, decline in toad populations, and human persecution due to their cobra-like defensive stance.
Cultural Significance
Commonly known as 'puff adders' or 'spreading adders' in rural folklore. They play a vital ecological role in controlling toad populations.
Notable Features
Melanistic coloration as seen here is a beautiful color variant. Their ability to feign death (including emitting a foul musk and even bleeding from the mouth) is one of the most complex defensive behaviors in the reptile world.