Eastern Hognose Snake
Heterodon platirhinos • Order: Squamata, Suborder: Serpentes, Family: Colubridae, Subfamily: Dipsadinae, Genus: Heterodon, Species: platirhinos
Eastern North America, ranging from southern Ontario, Canada, through the eastern United States from New Hampshire to Florida, and west to Texas and Kansas.
Look up Eastern Hognose Snake in the Snake Encyclopedia →Venomous Status
Mildly venomous (Rear-fanged/Opisthoglyphous); they possess enlarged teeth at the back of the maxilla.
Danger Level
Harmless; while they can bite, they almost never do so in defense, preferring elaborate bluffs or feigning death. Bites are extremely rare and typically result in minor local swelling.
Family
Order: Squamata, Suborder: Serpentes, Family: Colubridae, Subfamily: Dipsadinae, Genus: Heterodon, Species: platirhinos
Conservation
Least Concern (IUCN), though populations are declining in some northern areas due to habitat loss and decline in toad populations.
Physical Description
Stocky body with a highly distinctive upturned (spade-like) rostral scale. Coloration is highly variable, ranging from yellow, gray, or brown with dark blotches to solid black (melanistic). The underside of the tail is usually lighter than the belly.
Size & Dimensions
The specimen in the image appears to be a subadult or small adult, approximately 45-60 cm. Adults typically range from 50 to 85 cm, with a maximum record of about 115 cm.
Habitat
Prefer areas with sandy, loose soils for burrowing including coastal plains, open woodlands, old fields, and forest edges. They are found from sea level up to approximately 750 meters.
Behavior & Temperament
Famous for dramatic defensive displays including flattening the neck (hooding) like a cobra, hissing loudly, and striking with a closed mouth. If this fails, they will roll over, hang their tongue out, and play dead (thanatosis).
Diet & Feeding
Specialize almost exclusively in amphibians, particularly toads (Bufo/Anaxyrus). They use their upturned snout to dig for prey and their rear fangs to puncture inflated toads to make them easier to swallow.
Reproduction
Oviparous (egg-laying). Females lay clutches of 8 to 40 eggs in sandy soil during early summer; neonates hatch in late summer or autumn.
Venom Profile
The venom is specialized for neutralizing toads; it is generally harmless to humans, lacking medically significant toxins for mammals.
Look-alikes
Often confused with Pygmy Rattlesnakes or Cottonmouths due to their stocky build and defensive hooding, but distinguished by the unique upturned nose and lack of heat-sensing pits.
Conservation Status
Least Concern (IUCN), though populations are declining in some northern areas due to habitat loss and decline in toad populations.
Cultural Significance
Commonly known by nicknames like 'puff adder' or 'hissing sand snake.' They play a vital ecological role in controlling amphibian populations and are favorites among naturalists for their unique behavior.
Notable Features
The upturned snout is a specialized adaptation for fossorial life and digging up toads. Their ability to feign death—even producing a foul smell to mimic rot—is one of the most complex defensive behaviors in the reptile world.