Reptile · Kingsnake & milksnake
Western milk snake care guide
Lampropeltis gentilis
The western milk snake is a intermediate-level kingsnake & milksnake from W Great Plains and Rocky Mountain region. Adults reach 50–90 cm and live 15–20 years in captivity. Includes pale and Utah milk snakes; offer a winter cooling period. Solitary.
- Enclosure 90 × 45 × 45 cm
- Temp Warm 28–30°C, cool 20–22°C
- Humidity 30–50%
How much does a western milk snake cost in Canada?
Western milk snake quick facts
- Skill level
- Intermediate
- Adult size
- 50–90 cm
- Lifespan
- 15–20 years
- Activity
- Nocturnal
- Native range
- W Great Plains and Rocky Mountain region
- Minimum enclosure
- 90 × 45 × 45 cm (35 × 18 × 18 in, ≈ 48 US gal)
- Housing
- Best kept alone.
- Temperature
- Warm 28–30°C, cool 20–22°C
- Humidity
- 30–50%
- UVB
- Recommended
- Diet
- Carnivore – frozen/thawed mice
- Bioactive style
- Temperate forest
Western milk snake enclosure & bioactive setup
Give one adult at least 90 × 45 × 45 cm (35 × 18 × 18 inches). Best kept alone. This species suits a temperate forest bioactive build.
- Leaf litter2 cm
- Jurassic ABG Terrarium Mix10 cm
Keep a moisture gradient: drier on top and at the warm end, slightly moist underneath and at the cool end.
Temperature: Warm 28–30°C, cool 20–22°C. Humidity: 30–50%. UVB: Recommended.
What does a western milk snake eat?
Carnivore – frozen/thawed mice. Feed one small thawed mouse every 7–10 days; some hatchlings need lizard scent.
Handling, temperament & health
Small and nervous but rarely bites.
Health watch: Watch for hatchling feeding refusal and dehydration.
Cleaning & maintenance schedule
Daily
- Check temperatures and refresh water.
Weekly
- Lightly moisten the cool end and lower soil.
- Spot-clean waste.
Monthly
- Top up leaf litter; check hides and branches are stable.
Yearly
- Partially refresh soil in high-traffic areas.
- Replace UVB bulbs (if used).
Recommended for a western milk snake bioactive
Quantities are for one minimum-size enclosure (90 × 45 × 45 cm).
Jurassic ABG Terrarium Mix
Bioactive soil layer, 10 cm
Coco Husk Chips - Dried Loose Pack
Optional top layer (coco husk chips)
Red Oak Leaves 15/Pack
Leaf litter – food and cover for the clean-up crew
Cork Bark Flats
A hide in each temperature zone
Cork Branches
Many colubrids climb more than people expect
Western milk snake FAQ
Is the western milk snake good for beginners?
The western milk snake is best for keepers with some experience (intermediate). Small and nervous but rarely bites.
What size enclosure does a western milk snake need?
At least 90 × 45 × 45 cm (about 35 × 18 × 18 inches, roughly 48 US gallons) for one adult. Best kept alone.
How much does a western milk snake cost in Canada?
Typically $150–400 CAD to buy, about $570–1070 CAD for a complete bioactive enclosure, and $150–300 CAD a year to keep.
What temperature and humidity does a western milk snake need?
Temperature: Warm 28–30°C, cool 20–22°C. Humidity: 30–50%.
What does a western milk snake eat?
Carnivore – frozen/thawed mice. Feed one small thawed mouse every 7–10 days; some hatchlings need lizard scent.
Similar species
This care sheet is general guidance from One Bioactive, not veterinary advice. Needs vary with age, locality and individual animals – confirm with your breeder and an exotics vet. Prices are typical Canadian ranges in CAD and change over time.