Eastern Hognose Snake
Heterodon platirhinos • Order Squamata, Suborder Serpentes, Family Colubridae, Subfamily Dipsadinae, Genus Heterodon, Species Heterodon platirhinos
Eastern half of North America, extending from southern Ontario, Canada, south through the eastern United States to Florida, and west to Texas, Kansas, and Minnesota.
Look up Eastern Hognose Snake in the Snake Encyclopedia →Family
Order Squamata, Suborder Serpentes, Family Colubridae, Subfamily Dipsadinae, Genus Heterodon, Species Heterodon platirhinos
Conservation
IUCN Red List: Least Concern. However, local populations face threats from habitat fragmentation, road mortality, and intentional killing due to mistaken identity as venomous snakes.
Physical Description
Variable coloration ranging from dark grey/black to yellow, red, or brown with dark blotches across the back. Distinct upturned rostral scale (spade-like snout), stout body, keeled scales, and rounded pupils.
Size & Dimensions
Specimen pictured appears to be an adult around 50-70 cm long. Typical adult size range is 50 to 85 cm (20-33 inches), with maximum recorded length around 115 cm.
Habitat
Prefers areas with loose, sandy soils suitable for burrowing, such as open woodlands, pine-oak forests, fields, coastal dunes, and agricultural edges from sea level up to around 700 meters elevation.
Diet & Feeding
Specialized toad eater (toad specialist), but also consumes frogs, salamanders, small mammals, and invertebrates. Uses enlarged rear teeth to puncture inflated toads to swallow them easily.
Reproduction
Oviparous (egg-laying). Females lay a clutch of 8 to 40 white, leathery eggs during early summer, which hatch in late summer or early autumn after about 60 days.
Look-alikes
Often confused with venomous vipers like the Pygmy Rattlesnake (Sistrurus miliarius) or Copperhead (Agkistrodon contortrix) due to neck flattening, but lacks heat-sensing pits, rattles, and vertical pupils.
Conservation Status
IUCN Red List: Least Concern. However, local populations face threats from habitat fragmentation, road mortality, and intentional killing due to mistaken identity as venomous snakes.
Cultural Significance
Nicknamed the 'puff adder' or 'blow viper' due to its dramatic defensive puffing, though it is harmless. Highly valued ecologically for controlling toad populations.
Notable Features
Distinct spade-like upturned snout adapted for digging up buried prey, immune tolerance to toxic toad secretions, and extraordinary death-feigning defensive behavior.