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Species Profile

Gopher Snake

Pituophis catenifer

Rattlesnake act-harmless rodent hunter
Creeping Things/Shutterstock.com
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At a Glance

Wild Species
Also Known As Bullsnake, Pine snake, Chicken snake
Diet Carnivore
Activity Diurnal+
Lifespan 8 years
Weight 2.5 lbs
Status Least Concern
Did You Know?

Nonvenomous: it lacks venom glands/fangs for envenomation and subdues prey by constriction (Colubridae).

Scientific Classification

A large, nonvenomous North American colubrid commonly called the gopher snake, noted for mimicking rattlesnakes (hissing, head flattening, tail vibration) and for preying heavily on rodents.

Kingdom
Animalia
Phylum
Chordata
Class
Reptilia
Order
Squamata
Family
Colubridae
Genus
Pituophis
Species
Pituophis catenifer

Distinguishing Features

  • Nonvenomous constrictor; robust body with variable blotched patterning
  • Often produces a loud hiss and vibrates tail when threatened (rattlesnake mimicry)
  • Narrower head and lack of a true rattle distinguish it from rattlesnakes
  • Excellent burrow-user; frequently associated with rodent colonies

Physical Measurements

Length
4 ft 7 in (2 ft 11 in – 8 ft 2 in)
Weight
2 lbs (1 lbs – 5 lbs)
Tail Length
9 in (6 in – 1 ft 2 in)
Top Speed
3 mph
No measured top speed

Appearance

Primary Colors
Secondary Colors
Skin Type Dry, keratinized, overlapping scales; dorsal scales usually keeled (gives a rougher texture than smooth-scaled colubrids) with broad ventral scutes for traction. Nonvenomous colubrid (no venom-delivery fangs).
Distinctive Features
  • Adult total length commonly ~91-183 cm, with large individuals reported to ~213 cm (sources commonly cited in field guides such as Stebbins).
  • Heavy-bodied, muscular constrictor; head somewhat distinct from neck (can be exaggerated by defensive head-flattening).
  • Enlarged, slightly upturned rostral scale ("shovel-nose" look) used for digging and prying in burrows; commonly found using rodent burrow systems.
  • Rattlesnake-mimic defensive display: loud sustained hissing, head/neck flattening, body coiling, and rapid tail vibration against vegetation/leaf litter to create a buzzing sound; notably lacks a true rattle (behavioral mimicry, not venom).
  • Ecological pest-control role: diet heavily focused on rodents, especially pocket gophers and other small mammals; also takes ground squirrels, mice, voles, rabbits (juveniles), birds and eggs when available; kills primarily by constriction.
  • Geographic variation is pronounced across its broad North American range (coastal to desert to prairie forms); avoid assigning a specific subspecies without locality because color/blotch contrast and overall size shift clinally and among regional variants.

Sexual Dimorphism

Sexual dimorphism is generally subtle in the gopher snake. Sexes overlap strongly in coloration and pattern; differences are usually proportional rather than distinct visual morphs (typical of many colubrid snakes).

  • Often relatively longer tails (post-cloacal length) due to hemipenes; may appear slightly more tapered posteriorly compared with females of similar total length.
  • Often slightly heavier-bodied at equivalent length and may average larger in some populations, especially during/around reproductive condition; otherwise externally similar in color and pattern.

Did You Know?

Nonvenomous: it lacks venom glands/fangs for envenomation and subdues prey by constriction (Colubridae).

Size range is commonly ~90-180 cm total length; exceptionally large individuals can exceed 200 cm, with records approaching ~2.7 m in the species complex (reported in major North American field references such as Stebbins; Ernst & Ernst).

Defense mimicry includes a loud, sustained hiss produced by specialized airway structures in Pituophis, plus head flattening and rapid tail vibration that can sound like a rattle in dry leaf litter.

Diet is heavily rodent-based-pocket gophers, ground squirrels, mice, and voles are frequent prey-making it a valuable natural pest-control species in rangelands and agricultural edges.

It's an accomplished burrow user and digger; an enlarged, hardened rostral ("shovel-like") snout scale helps it push through soil and enter mammal burrows.

Reproduction is oviparous: females lay clutches typically in the single digits to low teens (often cited as ~6-15 eggs, with wider reported ranges up to the low 20s depending on population).

"Gopher snake" is one name in a highly variable species with many regional forms and common names (e.g., bullsnake, Pacific gopher snake, Sonoran gopher snake), reflecting strong geographic pattern variation.

Unique Adaptations

  • Enlarged rostral scale and robust forebody musculature adapted for digging and pushing into compact soil and burrows (a hallmark of Pituophis).
  • Enhanced respiratory/hissing apparatus: Pituophis species are noted for producing an unusually loud, long hiss via modified laryngeal/epiglottal structures described in anatomical accounts of the genus.
  • Rattlesnake-like defensive repertoire without venom: multimodal mimicry (sound + posture + movement) can deter predators while remaining harmless to humans.
  • High pattern and color variability across geography (from bold blotches to paler desert forms), improving camouflage in habitats ranging from coastal scrub to grasslands and semi-desert.
  • Strong tolerance of arid and open habitats compared with many forest-associated colubrids, aided by burrow use for shelter and humidity buffering.

Interesting Behaviors

  • Rattlesnake mimic threat display: coils, flattens the head, draws back to strike, hisses loudly, and vibrates the tail (often striking the ground/leaf litter to amplify sound).
  • Burrow-commuting hunter: routinely enters and patrols rodent tunnels, where it can ambush prey at close range.
  • Constrict-and-swallow feeding: grabs prey, applies constriction, then repositions to swallow head-first (common in many colubrids but especially rodent-focused here).
  • Seasonal activity shifts: active mainly in warmer months; in colder parts of the range it brumates (often communally with other snakes in suitable hibernacula).
  • Thermoregulation behavior: basks at burrow mouths or open ground, then retreats quickly when threatened-supporting both digestion and predator avoidance.
  • Egg-laying site selection: females seek warm, protected sites (e.g., loose soil, rotting vegetation, or mammal burrows) that provide stable incubation temperatures.

Cultural Significance

Gopher Snake (Pituophis catenifer) is liked by farmers for eating pocket gophers and crop rodents. Its rattlesnake-like hiss and tail buzz are used to teach how to tell it from rattlesnakes. "Catenifer" means "chain-bearing" for its chain-like back blotches.

Myths & Legends

Frontier-era North American stories often called the Gopher Snake, Pituophis catenifer, the 'bullsnake' because its deep, bellow-like hiss and bold bluff made people say it 'bellowed like a bull' when cornered.

In parts of North America, rural people believed large nonvenomous snakes, including gopher snakes (Pituophis catenifer), stole milk from cows and goats. This old myth led to killing useful rodent-eaters.

On farms and ranches, finding a large gopher snake (Pituophis catenifer) near corrals or granaries is seen as a sign there will be fewer gophers and rats that season, a local good luck belief.

Because it so closely imitates a rattlesnake's warning display, regional anecdotes often frame it as a 'trickster snake' that survives by deception-an informal modern legend repeated in outdoor culture and field-herper circles.

Conservation Status

LC Least Concern

Widespread and abundant in the wild.

Population Stable

Protected Under

  • Global: Not listed under CITES; not listed under the U.S. Endangered Species Act at the species level (protections vary by state).
  • Canada: Some populations/subspecies within the Pituophis catenifer complex receive legal protection/listing at risk under federal/provincial frameworks (e.g., Species at Risk Act listings for certain BC populations), which can confer take/harassment prohibitions and habitat-related measures in those jurisdictions.
  • Many U.S. states/provinces regulate take/possession of native reptiles (permits/limits), indirectly affording protection to wild gopher snake populations in parts of the range.

Life Cycle

Birth 8 hatchlings
Lifespan 8 years

Lifespan

In the Wild
1–12.3 years
In Captivity
1–33.3 years

Reproduction

Mating System Polygynandry
Social Structure Solitary
Breeding Pattern Transient
Fertilization Internal Fertilization
Birth Type Internal_fertilization

Gopher snakes (Pituophis catenifer) breed seasonally and are solitary with no pair bonds. Mating is polygynandrous (both sexes mate with multiple partners); males search and fight for females, mostly in spring. Females lay 2–24 eggs (~6–12 common), may store sperm, no parental care.

Behavior & Ecology

Social Congregation Group: 1
Activity Diurnal, Crepuscular
Diet Carnivore Rodents-especially burrow-dwelling mammals such as pocket gophers (Thomomys spp.) and other small mammals (reported as the dominant prey category across much of the range).
Seasonal Hibernates 1 mi

Temperament

Generally non-aggressive toward humans but strongly defensive when threatened
Defensive display often includes loud hissing, head/neck flattening, and rapid tail vibration against substrate (rattlesnake mimicry); may bluff-strike
May release cloacal musk/feces when handled; may bite if persistently provoked (Ernst & Ernst, 2003; Stebbins & McGinnis, 2018)

Communication

Hissing Forced exhalation; commonly produced during defensive displays
Chemical communication via pheromones Tongue-flicking/chemosensory tracking used in mate searching; males follow female scent trails) (Ernst & Ernst, 2003
Tactile signaling during courtship/mating Close body contact; alignment and rubbing as part of courtship sequence) (Ernst & Ernst, 2003
Visual/behavioral threat display: head/neck flattening, elevated anterior body, open-mouth posturing; enhances apparent size and mimics sympatric rattlesnakes Stebbins & McGinnis, 2018
Substrate-borne vibration via rapid tail movement Defensive; produces audible buzz when tail contacts dry vegetation) (Stebbins & McGinnis, 2018
Olfactory deterrence via cloacal musk Anti-predator chemical defense

Habitat

Biomes:
Temperate Grassland Temperate Forest Mediterranean Desert Hot Desert Cold Alpine Freshwater Wetland +2
Terrain:
Mountainous Hilly Plateau Plains Valley Coastal Island Riverine Rocky Sandy +4
Elevation: Up to 8858 ft 3 in

Ecological Role

Mid-sized terrestrial predator specializing on small mammals (notably rodents), functioning as an important natural controller of burrowing rodent populations in grassland, desert, scrub, and open woodland ecosystems.

Suppresses populations of agricultural/pest rodents (e.g., gophers, mice, voles), reducing crop and rangeland damage Links belowground/ground-level food webs (rodent burrows) to aboveground predators by moving energy from fossorial prey to higher trophic levels Serves as prey for raptors and mammalian mesopredators, supporting predator communities Contributes to regulating local small-vertebrate community structure through opportunistic predation on birds/eggs and small reptiles

Diet Details

Main Prey:
Pocket gophers Mice Vole Rats Ground squirrel Chipmunks Rabbit Birds Bird eggs Small lizards Small vertebrates +5

Human Interaction

Domestication Status

Wild

Pituophis catenifer (gopher snake) is not domesticated. It is a wild North American snake that has been kept and bred in captivity for pets and education, but shows no signs of true domestication. Humans often kill or move them after mistaking rattlesnake mimicry (hissing, head flattening, tail vibration), hit them on roads, or value them for rodent control and display.

Danger Level

Low
  • Nonvenomous but can deliver painful defensive bites; larger adults can cause puncture wounds/lacerations.
  • Defensive displays can lead to misidentification as a rattlesnake, increasing the chance of people attempting to kill/handle it unsafely.
  • Zoonotic risk typical of reptiles (e.g., Salmonella) if hygiene is poor.
  • Allergic reactions to bites/scratches or to feeder rodents/substrate are possible but uncommon.

As a Pet

Suitable as Pet

Legality: Gopher Snake (Pituophis catenifer) is usually legal as a captive-bred pet in much of the U.S., but rules vary by state, province, or city. Permits, collection limits, and transport rules may apply. Check local laws first.

Care Level: Moderate

Purchase Cost: $75 - $250
Lifetime Cost: $2,000 - $6,000

Economic Value

Uses:
Ecosystem services (rodent control) Pet trade (captive-bred) Education/outreach (nature centers, zoos) Research/teaching specimens (limited)
Products:
  • live animals (captive-bred individuals)
  • educational programming/handling demonstrations (where permitted)
  • indirect agricultural benefit via rodent predation

Relationships

Related Species 8

Gopher Snake Summary

Gopher snakes can reach up to 9 feet long.

The gopher snake, which includes 6 subspecies, is found primarily in the western United States, southern Canada, and northern Mexico. It thrives in arid climates below 2,000 feet altitude, and it is carnivorous. Though it has no venom, it has a painful bite that it uses to capture small prey (like birds and gophers). This snake is primarily docile, reaching up to 9 feet in length.

Gopher Snake Amazing facts

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The gopher snake is commonly misidentified as a Rattlesnake because of its markings and defensive behavior. It may hiss loudly, flatten its head, vibrate the tail, and strike when annoyed.

  • Even though the bite of a gopher snake can hurt a lot, they don’t produce venom.
  • They tend to be more abundant in arid climates below 2,000 feet altitude, like California, Utah, Wisconsin, and Texas.
  • This snake is named for one of the main parts of its diet – the pocket gopher. Their diet also consists of other small mammals, birds, eggs, small lizards, and sometimes insects.
  • There are seven subspecies of gopher snakes, which include the Sonoran gopher snake, the Pacific gopher snake, and bullsnakes.

Evolution and Origins

The gopher snake is a nonvenomous species that belongs to the genus Pituophis, which is part of the larger Colubridae family. The exact origins of the gopher snake are unclear, but it is believed that these snakes evolved in North America during the Miocene epoch, which occurred approximately 23 to 5.3 million years ago.

Gopher snakes are known for their adaptability to different environments and can be found in a variety of habitats, including deserts, grasslands, and forests.

They are also found in different regions of North America, from Canada to Mexico. Over time, different subspecies of gopher snakes have developed unique physical and behavioral adaptations that help them survive in their specific environments.

Despite their name, gopher snakes do not exclusively prey on gophers but are known for eating a variety of small mammals, birds, and reptiles.

Different Types

Here are the seven different species of gopher snake:

  • Bullsnake
  • Sonoran gopher snake
  • Great Basin gopher snake
  • Pacific gopher snake
  • San Diego gopher snake
  • Santa Cruz gopher snake
  • Arizona black rattlesnake: (The Arizona black rattlesnake (Crotalus cerberus) is not considered a true gopher snake species, although it is sometimes referred to as the “Arizona black gopher snake” due to its similar appearance and behavior. It is actually a species of venomous rattlesnake, and is part of the larger Viperidae family.)

Note that some sources consider the Arizona black rattlesnake to be a subspecies of the western rattlesnake rather than a separate gopher snake species.

Where To Find Them

gopher snake

A gopher snake is coiled up and ready to strike.

The Pacific gopher snake, as the name implies, primarily lives along the West Coast along the Pacific Ocean for its main habitat. The range of this snake goes no further than California (since they don’t go in the water), but they can be found as far north as British Columbia and as far south as Mexico. They can be found in Utah, Wisconsin, Illinois, Missouri, and Texas.

They don’t like altitudes of more than 2,000 feet, staying close to the ground. Semi-arid and brushy areas are their preferred habitat of choice, which is why they are often found near farms. They also like pine forests, prairies, and dunes.

They hibernate during the winter, willingly congregating with rattlesnakes, whipsnakes, and other breeds in a den. In Utah, these snakes will even boldly make a place for themselves in parks, which may intimidate individuals who aren’t familiar with their harmless nature.

When the breeding season starts in June, male gopher snakes will no longer share these dens, becoming incredibly territorial over their habitat. However, as females start to lay their eggs in June and July, they’ll willingly congregate with other species again.

Scientific Name

gopher snake by concrete wall

Gopher snakes can measure between three and eight feet.

The gopher snake, which is also known as the Pacific gopher snake, California gopher snake, or Sonoran gopher snake, has the scientific name Pituophis catenifer. The name “Pituophis” comes from two Greek words – “pitys” (or “pine”) and “ophis” (or “snake”). “Catenifer,” however, is Latin, and it means “chain-bearing,” which is a description of the pattern seen on the back of the gopher snake.
It belongs to the Reptilia class and the Colubridae family.

Population and Conservation Status

The total population of the gopher snake varies among the six subspecies, which are divided by the region they natively live in. The Coronado Island gopher snake, for example, primarily lives in Colorado and California, while the Sonoran gopher snake is found in Arizona, Mexico, and California.
Among all of these subspecies, there is no estimated population, but the IUCN considers them to be of “Least Concern.”

How To Identify: Appearance and Description

gopher snake

Great Basin Gopher Snake, Pituophis catenifer deserticola

Their average length is 4 feet, though the right environment and nutrition make it possible for them to grow to a size of 9 feet. Their entire back is decorated with saddle spots that are either reddish-brown or dark brown down their entire back as the basic morphs of this snake.

They also have 2-3 rows of spots along both sides, though the spots on the second row tend to be a little larger. In total, the spots come up to 33-66 spots in total. Snakes in California have striped morphs that replicate these colors. In these
morphs, the ventral side is usually yellow with dark spots, becoming redder on the dorsal side.

How to identify a Gopher Snake:

  • Tan, cream, or yellow ground color.
  • 33-66 reddish-brown or dark brown blotches along the back, broken into 2-3 rows on each side.
  • The second row of spots is larger on the side.
Bull Snake with Jaws Open

Gopher snakes, like this bull snake, make a great show of being dangerous — but they’re not.

How Dangerous Are They?

The gopher snake is quite misleading in its behavior. When it becomes afraid or agitated by humans, it will make itself look bigger and flatten its head. It even makes a rattling noise with its shaking tail, which is only heard in dry areas.

Though it may look like it is about to cause as much harm as a rattlesnake, it can’t – this species is non-venomous and not poisonous. In fact, they are typically docile, and they pose no threat to humans (though the same can’t be said for the small mammals they hunt).

If a gopher snake bites you, seek medical attention to ensure the damage is no more than skin deep. The pain you experience with this type of bite is intense, so it is easy to mistake the animal for something more harmful, and it is always better to be safe than sorry.

Behavior and Humans

Overall, the gopher snake isn’t a threat to humans, and they are quite unbothered by them. They don’t go after a game that is bigger than a small mammal, so most humans aren’t even worried about seeing them in their yards. They aren’t dangerous or aggressive, and they mostly leave humans alone unless they feel threatened.

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Sources

  1. https://www.webmd.com/first-aid/snakebite
  2. https://www.desertmuseum.org/books/nhsd_gopher_snake.php
  3. https://animaldiversity.org/accounts/Pituophis_catenifer/
  4. https://en.wikipedia.org/wiki/Pituophis_catenifer
  5. https://www.catseyepest.com/library/wildlife/snakes/gopher-snakes/
Rebecca Bales

About the Author

Rebecca Bales

Rebecca is an experienced Professional Freelancer with nearly a decade of expertise in writing SEO Content, Digital Illustrations, and Graphic Design. When not engrossed in her creative endeavors, Rebecca dedicates her time to cycling and filming her nature adventures. When not focused on her passion for creating and crafting optimized materials, she harbors a deep fascination and love for cats, jumping spiders, and pet rats.
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Gopher Snake FAQs (Frequently Asked Questions)

Yes. Even though they do not have fangs or poison, their bite can be incredibly painful as they clamp down hard on the skin. Proper wound care is a necessity after a bite, which is best done with a medical professional.