Hognose snakes get their name from their upturned snout that resembles the snout of a pig. This snout helps the snake to dig burrows in sandy soil.
NPS Photo
Plains Hognose Snake Heterodon nasicus
These snakes are moderately long and robust. Adults range from 15 to 26 inches in length.
The plains hog-nosed snake has an upturned rostral scale at the tip of the snout that is the source of their name.
When threatened, this species will flatten its head and neck creating a cobra-like hood and hiss and thrash its head.
Individuals will also play dead by opening its mouth, rolling upside down and releasing a foul-smelling musk.
Identification
Background coloration is typically light brown or tan and a series of brown blotches run the length of the body.
The underside is tan or light yellow in color.
Juveniles are similar in appearance to adults.
Diet
Primarily feed on frogs and toads, birds, small mammals, and eggs.
Interactions with other animals
Prey to other snakes, weasels, coyotes, foxes and most birds of prey.
Last updated: January 9, 2024
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Contact Info
Mailing Address:
11149 U.S. Hwy. 16
Building B12
Custer,
SD
57730
Phone:
605 673-8300
The main phone line connects visitors with staff at the visitor center. Throughout the year, the phone line is monitored by staff on a daily basis, excluding holidays and days with limited visitor services. Please be advised that after-hours messages are not taken on the system; visitors are encouraged to call the visitor center during normal operations and speak with a park ranger for assistance.
