Spotted tree monitor (Varanus scalaris)
Photo: Matt from Melbourne, Australia / CC BY 2.0 · via Wikimedia Commons

Reptile · Monitor

Spotted tree monitor care guide

Varanus scalaris

IntermediateCITES – buy captive-bred

The spotted tree monitor is a intermediate-level monitor from Northern Australia, New Guinea. Adults reach 50–60 cm and live 12–15 years in captivity. Arboreal; lots of climbing branches.

  • Enclosure 120 × 60 × 120 cm
  • Temp Basking 50°C, cool 26°C
  • Humidity 50–70%

How much does a spotted tree monitor cost in Canada?

Animal$800–2000Typical captive-bred price
Bioactive enclosure$1700–2880Enclosure $860–1630 · equipment $210–450 · bioactive supplies ≈ $670
Yearly upkeep$450–700Food, supplements, bulbs, power, vet fund
First year total$2950–5580All prices CAD, estimates

Spotted tree monitor quick facts

Skill level
Intermediate
Adult size
50–60 cm
Lifespan
12–15 years
Activity
Diurnal
Native range
Northern Australia, New Guinea
Minimum enclosure
120 × 60 × 120 cm (47 × 24 × 47 in, ≈ 228 US gal)
Housing
Best kept alone.
Temperature
Basking 50°C, cool 26°C
Humidity
50–70%
UVB
Required
Diet
Insectivore – roaches, crickets, occasional egg
Bioactive style
Tropical arboreal

Spotted tree monitor enclosure & bioactive setup

Give one adult at least 120 × 60 × 120 cm (47 × 24 × 47 inches). Best kept alone. This species suits a tropical arboreal bioactive build.

  1. Leaf litter2 cm
  2. Jurassic ABG Terrarium Mix15 cm
  3. Drainage – clay bio balls5 cm

Most of the action is vertical – keep the soil moist but not wet, and focus on perches and dense planting.

Temperature: Basking 50°C, cool 26°C. Humidity: 50–70%. UVB: Required.

What does a spotted tree monitor eat?

Insectivore – roaches, crickets, occasional egg. Juveniles daily, adults 4–5 times a week.

Handling, temperament & health

Usually tolerant once settled.

Health watch: Obesity and dehydration.

Cleaning & maintenance schedule

Daily

  • Mist to raise humidity – usually a heavy evening misting with a dry-down by day.
  • Check temperatures at perch height.

Weekly

  • Feed; remove uneaten food (and diet dishes after 24–48 h).
  • Check the drainage layer and prune vines.
  • Look for stuck shed on toes and tails.

Monthly

  • Top up leaf litter.
  • Check branches and mounts are still secure.
  • Clean glass, vents and misting nozzles.

Yearly

  • Refresh the top of the soil in open areas.
  • Replace UVB bulbs (if used) on schedule.

Recommended for a spotted tree monitor bioactive

Quantities are for one minimum-size enclosure (120 × 60 × 120 cm).

Spotted tree monitor FAQ

Is the spotted tree monitor good for beginners?

The spotted tree monitor is best for keepers with some experience (intermediate). Usually tolerant once settled.

What size enclosure does a spotted tree monitor need?

At least 120 × 60 × 120 cm (about 47 × 24 × 47 inches, roughly 228 US gallons) for one adult. Best kept alone.

How much does a spotted tree monitor cost in Canada?

Typically $800–2000 CAD to buy, about $1700–2880 CAD for a complete bioactive enclosure, and $450–700 CAD a year to keep.

What temperature and humidity does a spotted tree monitor need?

Temperature: Basking 50°C, cool 26°C. Humidity: 50–70%.

What does a spotted tree monitor eat?

Insectivore – roaches, crickets, occasional egg. Juveniles daily, adults 4–5 times a week.

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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.