RecoveryRear-fanged · Mixed
Western hognose snake
Heterodon nasicus
A rear-fanged colubrid with a mild, saliva-borne toxin. Bites are rare and usually cause nothing worse than local swelling, but it is the honest entry point into rear-fanged keeping: same record-keeping discipline, far lower consequence.
- Experience level
- Intermediate venomous
- Native range
- Central USA, northern Mexico
- Adult size
- 18–30 in (46–76 cm), females larger
- Lifespan
- 15–20 years
Care sheet
| Adult enclosure | 36 x 18 x 12 in minimum, front-opening, escape-proof |
|---|---|
| Warm side surface | 88–92°F (31–33°C) belly heat, thermostat-controlled |
| Cool side | 72–76°F (22–24°C) |
| Night drop | Safe to 68°F (20°C) |
| Humidity | 30–40%, spike to 60% during a shed |
| Substrate | 3–4 in aspen or dry topsoil blend — they burrow constantly |
| Water | Small heavy bowl, changed weekly |
| UVB | Optional low-output (2–5%) linear tube |
- They dig. Any weight of decor must sit on the floor of the enclosure, not on the substrate, or it can settle on a buried snake.
- Screen lids lose humidity fast; a partially covered top holds the shed-cycle spike without souring the substrate.
- Keep singly. Cohabitation drives food-response bites between animals and makes feeding records meaningless.
Safety & bite protocol
- Rear fangs sit far back — envenomation needs a prolonged chewing bite, most often during a feeding-response grab on a bare hand.
- Use a hook or a paper-towel tube to lift, and offer food with 12 in tongs.
- Anyone with a known reaction to insect stings or a history of allergic swelling should treat even a mild bite as a hospital trip.
- Log every bite in the animal's record with time, duration and swelling — a written pattern is what a doctor and a permit officer both ask for.
Husbandry information only — not medical or legal advice. Permit rules, caging standards and antivenom availability differ by state, county and city.
Feeding
- Hatchlings: one appropriately sized pinky every 5 days.
- Juveniles: fuzzy to hopper mouse every 7 days.
- Adults: one adult mouse every 10–14 days; females carry weight easily, so weigh monthly and back off before obesity.
- Frozen-thawed only. Scented feeding works for stubborn hatchlings but never live rodents for an adult.
Breeding tips
- Season
- Cool from November, pair from late February
- Gestation / incubation
- 52–60 days at 80–84°F (27–29°C)
- Clutch / litter
- 4–15 eggs, occasionally a second clutch
- Only breed females over 300 g and at least 2 years old; smaller females frequently retain eggs.
- Brumate at 55–60°F (13–16°C) for 6–8 weeks with water available and no food, then raise temperatures over a week.
- Introduce the male to the female's enclosure and watch — pull the pair if either animal is stressed, and record every lock.
- Expect a pre-lay shed roughly 3 weeks before laying; add a damp sphagnum lay box the day that shed completes.
- Track ovulation and pre-lay shed dates in the breeding log; the lay date is predictable from the shed, not from the pairing.
Neonates
- Hatchlings shed within 7–10 days and take their first meal after that shed.
- House individually in small tubs with 1 in of aspen and a hide; large enclosures suppress feeding.
- Hognose hatchlings are the classic non-feeder — braining or scenting a pinky with tuna water usually starts them.
FAQ
Do western hognose snakes need a venomous permit?
In most US states no, but a handful of states and many countries class all rear-fanged species as venomous. Check your state or national list before purchase, and keep any permit paperwork attached to the animal's record.
How bad is a hognose bite?
Typically localised swelling, itching and bruising for 24–72 hours from a sustained chewing bite. Serious reactions are uncommon but documented, so wash the site, elevate the limb and seek care if swelling spreads.
Keep the paperwork with the animal
Permits, liability insurance, vet records and apprenticeship hours all live in the venomous portal, with expiry alerts before anything lapses.