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  3. Western Hognose Snake

One of the 26 snakes on WAnimals

Reptiles · Squamata · Colubridae

Western Hognose Snake

Heterodon nasicus

Least Concern

The species is abundant and widely distributed; it faces no significant short-term risk.

Spotted something wrong?

The western hognose snake is a harmless species of reptile of the family Colubridae. It lives from south-eastern Alberta and south-western Manitoba in Canada, south as far as northern Mexico. There are also disjunct populations in Minnesota, Wisconsin, Iowa, Illinois, Missouri and Arkansas. It has two subspecies.

Weight

350 g on average

Size

40 cm – 90 cm

Life expectancy

18 years

Diet

Carnivore

Feeds mainly on other animals.

Activity

Diurnal

Active mainly during the day.

Social structure

Solitary

Lives and hunts alone, joining others only to breed.

DesertGrassland
3countries17parks17same family

Fun facts

  • GeneralIf hissing does not work it plays dead on its back with its tongue lolling out.
  • Its defensive repertoire has two acts: first it puffs up its neck, hisses and makes bluff strikes without biting, impersonating a dangerous snake; if the intruder does not leave, it writhes, rolls onto its back, lets its tongue loll out and sometimes defecates and regurgitates to strengthen the effect.
  • Its death-feigning is so rigid that if it is turned the right way up it immediately rolls onto its back again, giving the whole performance away.
  • Its shovel-shaped snout is adapted to digging up toads, which are the basis of its diet, and it is resistant to the skin toxins those amphibians produce.

Life cycle and biology

Skeleton type
Vertebrate - internal bony skeleton (reptile)
Habitat and environment
Sandy grassland, scrub and dry plains of central North America
Sexual maturity
2 years
Gestation / incubation
56 days
Litter / clutch size
13

Sources consulted: Wikipedia (es): Heterodon nasicus

Where to find it

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The pins mark the parks where its presence is documented.

Where to see it

Parks and dive sites where this species has been documented — showing 10 of 17.

Related species

Other species in the catalogue with the most in common with Western Hognose Snake — same habitat, park, country, tags or family.

Same taxonomic family
Same taxonomic family
Same taxonomic family
Same taxonomic family
Same taxonomic family
Same taxonomic family

Keep exploring

Based on what we already know about western hognose snake.

Share an experience, a fun fact or a tip for seeing the western hognose snake.
See full glossary
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See its range on the interactive map→
EvergladesUnited States
Great Smoky MountainsUnited States
Mammoth CaveUnited States
Point PeleeCanada
CongareeUnited States
BadlandsUnited States
Theodore RooseveltUnited States
Wind CaveUnited States
ShenandoahUnited States
Cuyahoga ValleyUnited States
See all 17 parks
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Eastern MilksnakeLeast Concern

Eastern Milksnake

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Racer

Coluber constrictor

CountriesUnited States
ParksEvergladesUnited States
TagsCarnivore
Carnivore
Diurnal
Solitary
Reptile
Desert
Grassland
United States
Canada
Mexico