Reptile · Monitor
Blunt-spined monitor care guide
Varanus primordius
The blunt-spined monitor is a advanced-level monitor from Northern Territory, Australia. Adults reach 20–25 cm and live 10–15 years in captivity. Tiny burrowing monitor; deep moist lower soil layer.
- Enclosure 90 × 45 × 75 cm
- Temp Basking 50°C, cool 26°C
- Humidity 40–60% (moist deep layer)
How much does a blunt-spined monitor cost in Canada?
Blunt-spined monitor quick facts
- Skill level
- Advanced
- Adult size
- 20–25 cm
- Lifespan
- 10–15 years
- Activity
- Diurnal
- Native range
- Northern Territory, Australia
- Minimum enclosure
- 90 × 45 × 75 cm (35 × 18 × 30 in, ≈ 80 US gal)
- Housing
- Best kept alone.
- Temperature
- Basking 50°C, cool 26°C
- Humidity
- 40–60% (moist deep layer)
- UVB
- Required
- Diet
- Insectivore – small roaches, crickets
- Bioactive style
- Semi-arid
Blunt-spined monitor enclosure & bioactive setup
Give one adult at least 90 × 45 × 75 cm (35 × 18 × 30 inches). Best kept alone. This species suits a semi-arid bioactive build.
- Leaf litter2 cm
- Jurassic ABG Semi-Arid Blend12 cm
- Base layer – packed coco fibre8 cm
No drainage layer – water deeply but rarely so the bottom stays slightly moist while the surface stays dry. This species digs, so give it 20 cm (8 in) of substrate in total. Only the top 12 cm needs to be bioactive soil; the 8 cm underneath can be cheaper coco fibre, dampened and packed firm.
Temperature: Basking 50°C, cool 26°C. Humidity: 40–60% (moist deep layer). UVB: Required.
What does a blunt-spined monitor eat?
Insectivore – small roaches, crickets. Juveniles daily, adults 4–5 times a week.
Handling, temperament & health
Shy burrower; minimal handling.
Health watch: Obesity and dehydration.
Cleaning & maintenance schedule
Daily
- Check basking surface temperature with an infrared thermometer.
- Keep the humid hide damp; refresh water.
Weekly
- Spot-clean waste.
- Every 1–2 weeks, pour water down into the soil around plants and in the cool corner.
Monthly
- Check stones and wood are stable and can’t be tunnelled under.
- Add a few leaves to the cool corner for isopods.
Yearly
- Refresh the top layer in the basking area.
- Replace UVB bulbs on schedule.
Recommended for a blunt-spined monitor bioactive
Quantities are for one minimum-size enclosure (90 × 45 × 75 cm).
Jurassic ABG Semi-Arid Blend
Bioactive top layer, 12 cm
Canyon Sand
Optional: mix in for a firmer, sandier texture
Premium Coconut Fiber
Base layer, 8 cm – dampen and pack firm so burrows hold
Eastern Oak Leaves 10/Pack
Leaf litter – food and cover for the clean-up crew
Terrarium Moss 7L Bag
Humid hide moss
Cork Bark Half Rounds
A hide at each end – plus one humid hide filled with damp moss
Mopani Wood
Climbing and a raised basking spot
Carnelian Stone
Holds heat under the lamp – place directly on the enclosure floor
Blunt-spined monitor FAQ
Is the blunt-spined monitor good for beginners?
The blunt-spined monitor is an advanced species – best for experienced keepers. Shy burrower; minimal handling.
What size enclosure does a blunt-spined monitor need?
At least 90 × 45 × 75 cm (about 35 × 18 × 30 inches, roughly 80 US gallons) for one adult. Best kept alone.
How much does a blunt-spined monitor cost in Canada?
Typically $2000–5000 CAD to buy, about $760–1370 CAD for a complete bioactive enclosure, and $400–600 CAD a year to keep.
What temperature and humidity does a blunt-spined monitor need?
Temperature: Basking 50°C, cool 26°C. Humidity: 40–60% (moist deep layer).
What does a blunt-spined monitor eat?
Insectivore – small roaches, crickets. Juveniles daily, adults 4–5 times a week.
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.