Reptoria

Western argus monitor (Varanus panoptes rubidus)

Monitors & tegus · Difficulty: Intermediate

Key facts and care guidance for Western argus monitor (Varanus panoptes rubidus) (origin: Western Australia – semi-desert). Adult size around 100–130 cm total length. Life expectancy 15–20 years. The values below are carefully researched guidance.

Short answers

Western argus monitor: How big does the enclosure need to be?

250×120×100 cm.

Western argus monitor: What temperature does it need?

Daytime 30–38 °C, basking spot 50 °C, at night 20–24 °C.

Western argus monitor: Does it need UVB lighting?

UVB: Essential (UVB 10.0–12 %).

Western argus monitor: How long do they live?

Life expectancy: 15–20 years.

Western argus monitor: Is it suitable for beginners?

Rather not – it is considered an intermediate species (difficulty: Intermediate).

Climate

Daytime temperature
30–38 °C
Night temperature
20–24 °C
Basking spot
50 °C
Humidity
35–50 %
UVB
Essential (UVB 10.0–12 %)

Enclosure

Minimum size
250×120×100 cm
Substrate
Sand-loam 30–40 cm for digging, stone slabs, a large cave

Feeding

Food
Insects, roaches, rodents, eggs, fish
Feeding interval
2×/week

Key facts

Adult size
100–130 cm total length
Life expectancy
15–20 years
Origin
Western Australia – semi-desert
Protection status
Export from Australia is prohibited
Brumation
A cooler dry spell of 8–10 weeks
Cohabitation
Keep them singly. Monitors and tegus are territorial; grown animals defend their territory and injure each other with serious bites in the process. Even small size differences mean one animal claims the warm spot and the food for itself while the other falls behind — which is often only noticed once the weaker animal has already lost weight. For breeding, put them together only under supervision.

Notes

The reddish desert form of the Argus monitor. It digs very deep burrows – the substrate has to be correspondingly deep. A large space and warmth requirement.

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Related species

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What you need to start

To keep Western argus monitor (Varanus panoptes rubidus) you typically need: a suitable enclosure (250×120×100 cm), substrate (Sand-loam 30–40 cm for digging, stone slabs, a large cave), a heat source with a thermostat, UVB lighting, thermometer and hygrometer, a water dish and hides. You will find equipment in the Reptoria marketplace.

The complete, interactive care database is in the Reptoria app.

Last updated: 25 September 2026 · Editor: Reptoria editorial team · Sources include: https://en.wikipedia.org/wiki/Yellow-spotted_monitor, https://reptile-database.reptarium.cz/species?genus=Varanus&species=panoptes

All values are non-binding guidance and do not replace expert advice. Research thoroughly from several sources before acquiring and keeping an animal, and observe the applicable law (species and animal protection in particular).