Western Hognose Snake

Overview

Western hognoses are small, quirky snakes with an upturned snout and a lot of personality ¹. Their manageable size and fairly simple care make them popular with first-time snake keepers ¹. Most are 14 to 24 inches long, and females outgrow males ¹. CEX gives up to 3 feet for females and 1 to 2 feet for males ². Tree of Life gives a captive lifespan of 12 to 18-plus years ¹, and Chicago Exotics 10 to 20 ².

They are rear-fanged and mildly venomous. Hognoses make a toxic saliva in a special gland called the Duvernoy's gland ². In their close relative, the eastern hognose, enlarged rear fangs deliver a mild venom used to subdue prey ⁴. A bite is generally not dangerous to people but can cause swelling and pain ². Fortunately they are very reluctant to bite unless they mistake you for food ².

Natural history

Western hognoses range from southern Canada to northern Mexico, across shortgrass prairie and dry, sandy, rocky country ³. The upturned nose is a digging tool: they burrow to search for food ³. Wild hognoses eat mostly frogs and toads, plus lizards, rodents and other small animals ². They are most active in the morning and late evening and hibernate through the winter ³.

When threatened they put on a famous show. They hiss loudly, flatten the head and neck like a cobra, and strike with a closed mouth. If that fails, they roll over and play dead ¹³.

Enclosure

• Size. 5–20 gallons for babies ¹². Adults need at least 20 gallons and up to 40, with a minimum floor space of 24 × 12 in ¹².
• Floor space beats height. These are ground-dwelling snakes that don't climb well ².
• Escape-proof. Clip the lid. Hognoses can push up on screens with their shovel-shaped noses ¹².
• Hides. At least two, warm and cool ¹².
• Burrowing. Burrowing space is essential ¹.
• Water. A water dish, ideally big enough to soak in ¹².
• Enrichment. Rocks, branches and rearranged hides ².

Temperature & lighting

Heat with an under-tank heater or heat tape on a thermostat. Never use hot rocks ¹².

UVB isn't required, but a low-output (2–6%) UVB light can encourage natural behaviors and may support health ¹². Give 10 to 12 hours of light a day ¹².

Humidity

Keep it low to moderate, about 30 to 50%. Avoid high humidity ¹². Respiratory problems are often linked to the wrong humidity ².

Substrate

Hognoses love to dig. Give adults 2 to 4 inches of loose substrate, such as aspen or a reptile topsoil–sand mix ¹². Babies are easier to monitor on paper ². Never use pine or cedar ¹². Hognoses are messy eaters and tend to swallow bedding, which can cause life-threatening impactions. Feeding in a separate bin is ideal ².

Diet & supplementation

• Prey. Pre-killed or frozen-thawed mice, about as wide as the snake's widest point, warmed to body temperature ¹².
• How often. Juveniles every 4 to 5 days, adults every 7 to 10 days ¹. CEX suggests once a week for most adults ².
• Tongs help. Hognoses strike from any direction, so tong-feeding gives you control. Shy feeders can be left alone with the food ².

Picky babies. Hatchlings can be reluctant to take rodents. Scenting a thawed pinky with tuna juice or amphibian scent often helps ². If not, a vet can help adjust temperature and humidity ¹. The easiest route is to buy a baby that has already eaten three or four meals with the breeder ².

Winter slowdown. From about November to February many hognoses slow down and eat less. Keep offering food and weigh them weekly ².

Handling & temperament

Start handling once your hognose is eating regularly, support the whole body and stay calm ¹. Bluff strikes and hissing are harmless and usually decrease with regular handling ¹. Playing dead in captivity is a sign of stress ².

Don't handle during a shed or within 48 hours of a meal ¹. Wash your hands afterward: snakes and feeder rodents can carry Salmonella ⁶.

Health

Common issues

• Impaction from swallowed substrate ².
• Respiratory infection. Wheezing, open-mouth breathing, frequent yawning or bubbles from the nose need a vet ²⁵.
• Mouth problems. Hognoses have fragile teeth and gums. A swollen face or scabs on the lips need a vet ².
• Difficult sheds and retained eye caps ¹.
• Refusing food, especially young snakes ².

When to see a vet

Plan an annual exam to track health and weight, and get prompt care for appetite changes or breathing symptoms ¹. Open-mouth breathing or an unresponsive snake is an emergency ⁷.

Breeding overview

Wild western hognoses breed in early to mid-summer. Females lay about 4 to 23 eggs and bury them in sand ³. Females mature at about two years ³.

Legal & ethics

Because hognoses are rear-fanged and mildly venomous, check your local exotic-pet rules before you buy. Choose captive-bred animals that are already eating.

Sources

1. Western Hognose Snake Care · Tree of Life Exotic Pet Medical Center
2. Western Hognose Care · Chicago Exotics Animal Hospital
3. Heterodon nasicus (nasicus) · Animal Diversity Web, University of Michigan
4. Heterodon platirhinos (Eastern Hognose Snake) · Animal Diversity Web, University of Michigan
5. Respiratory Infections in Snakes · Tree of Life Exotic Pet Medical Center
6. Salmonella, Feeder Rodents, and Pet Reptiles and Amphibians · U.S. Food and Drug Administration
7. When Should My Reptile See a Veterinarian? · Tree of Life Exotic Pet Medical Center

Last reviewed 2026-10-24 by Novel Fauna. This guide is general husbandry information, not veterinary advice. When an animal is sick, see a veterinarian experienced with exotic animals.

Revision history

1. 2026-10-24 Library: fix source frontmatter, hognose difficulty, fallback guide links, hero copy a22966a
2. 2026-10-24 Library: 50 cited care guides, /library/[slug] route, coming-soon cards, SLUGS.txt synced to species.guide_slug 228ce54

Evidence grades: Novel Fauna editorial: source classification, not yet expert-reviewed, 2026-10-25. What the grades mean.

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