Eastern Hognose Snake
Heterodon platirhinos • Order: Squamata, Suborder: Serpentes, Family: Colubridae, Subfamily: Dipsadinae, Genus: Heterodon, Species: Heterodon platirhinos
Venomous Status
Mildly venomous (opisthoglyphous / rear-fanged)
Danger Level
Low Risk / Harmless. They almost never bite humans, even when handled or provoked, preferring elaborate defensive displays over physical aggression.
Geographic Range
Eastern United States, from southern New Hampshire to southern Florida, and west to eastern Texas, western Kansas, and the Great Lakes region into southern Ontario, Canada.
Conservation Status
IUCN Least Concern. However, they are threatened locally by habitat loss, decline in toad populations, and human persecution due to their cobra-like defensive behavior.
Physical Description
Extremely variable coloration (orange, tan, gray, or melanistic black) with dark blotches. Features a distinctive upturned 'shovel-like' snout, a thick neck, keeled scales, and large round pupils. The specimen in the image shows a vibrant orange and black pattern.
Size & Dimensions
The specimen appears to be an adult. Typical adult size is 20 to 33 inches (51–84 cm), with a maximum record of approximately 45 inches (115 cm).
Habitat
Prefer areas with sandy soil for burrowing, including open woodlands, forest edges, grasslands, and coastal scrub. Found from sea level to approximately 2,500 feet elevation.
Behavior & Temperament
Famous for dramatic defensive displays including flattening the neck like a cobra (huffing), striking with a closed mouth, and 'playing dead' (thanatosis) by rolling onto its back with its tongue out.
Diet & Feeding
Specialized toad eater (bufovore). They use their rear fangs to puncture inflated toads to make them easier to swallow and have enlarged adrenal glands to handle toad toxins.
Reproduction
Oviparous (egg-laying). Females lay clutches of 8 to 40 eggs in early summer, which hatch in late summer or early autumn.
Venom Profile
Venom Type
The venom is specialized for neutralizing amphibians (toads) and is mild; it has some hemotoxic properties but is not medically significant to healthy humans.
AI-generated — see a qualified source if acting on this. For any snakebite, call emergency services immediately.
Look-alikes
Commonly confused with Copperheads (Agkistrodon contortrix) due to color, or Pygmy Rattlesnakes. Distinguished by the sharply upturned snout and round pupils, whereas vipers have vertical pupils and heat pits.
Conservation Status
IUCN Least Concern. However, they are threatened locally by habitat loss, decline in toad populations, and human persecution due to their cobra-like defensive behavior.
Cultural Significance
Often called 'puff adders' or 'spreading adders' in American folklore. They are vital for controlling toad and frog populations and serve as an iconic example of defensive mimicry and death-feigning in the animal kingdom.
Notable Features
Possesses a specialized rostral scale for digging and specialized rear teeth designed to 'pop' toads that inflate themselves as a defense mechanism.