Desert monitor (Varanus griseus)

Short answers

Desert monitor: How big does the enclosure need to be?

At least 200×100×80–100 cm for one animal; deep sand substrate they can dig in.

Desert monitor: What temperature does it need?

Daytime 28–35 °C, basking spot 45–55 °C, at night 18–22 °C.

Desert monitor: Does it need UVB lighting?

UVB: UVB needed, high (Ferguson zone 3–4, UV index 4–6; a desert species).

Desert monitor: How long do they live?

Life expectancy: 8–15 years.

Desert monitor: Is it suitable for beginners?

No – better suited to experienced keepers (difficulty: Expert).

Climate

Daytime temperature

28–35 °C

Night temperature

18–22 °C

Basking spot

45–55 °C

Humidity

30–50 % (dry; a damp lower substrate layer or burrow)

UVB

UVB needed, high (Ferguson zone 3–4, UV index 4–6; a desert species)

Enclosure

Minimum size

at least 200×100×80–100 cm for one animal; deep sand substrate they can dig in

Substrate

Deep sand or sand-loam they can dig in (for burrows), the lower layer slightly damp; a shallow water dish

Feeding

Food

Insects (locusts, beetles, roaches), small rodents, egg, occasionally chicks

Feeding interval

adults ~2×/week, juveniles every other day

Key facts

Adult size

up to ~100 cm (max. ~130 cm) total length

Life expectancy

8–15 years

Origin

North Africa, the Near East, the Arabian Peninsula, Central and South Asia – deserts and semi-deserts

Protection status

CITES Appendix I / EU Regulation Annex A – strictly protected! An EC commercial-use certificate, an unbroken chain of proof of origin and registration are mandatory

Brumation

Yes – a cool winter rest period (several weeks cooler at ~18–22 °C by day, with a shorter photoperiod) for health and reproduction

Cohabitation

Single housing; strictly territorial/solitary, never males together. The reason is territory: two animals will not voluntarily share a basking spot or a hiding place. They fight until one is seriously injured or permanently confined to a corner — and that second animal then eats worse, without showing any visible wound.

Notes

A demanding desert species, rare in captivity and tricky (wild-caught animals are often weakened and parasitised). CITES I → lawful only with unbroken papers. Name confusion: "Steppenwaran" in the trade usually means V. exanthematicus; here correctly V. griseus = the desert monitor.

Do you keep this species?

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Related species

• Argus monitor (Varanus panoptes) – Expert
• Bengal monitor (Varanus bengalensis) – Expert
• Blue tree monitor (Varanus macraei) – Expert
• Blue-tailed monitor (Varanus doreanus) – Intermediate to expert
• Finsch's monitor (Varanus doreanus finschi) – Expert
• Boatsi tree monitor (Varanus boatsi) – Expert
• Bogert's tree monitor (Varanus bogerti) – Expert
• Lace monitor (Varanus varius) – Expert

All species in the care wiki →

What you need to start

To keep Desert monitor (Varanus griseus) you typically need: a suitable enclosure (at least 200×100×80–100 cm for one animal; deep sand substrate they can dig in), substrate (Deep sand or sand-loam they can dig in (for burrows), the lower layer slightly damp; a shallow water dish), a heat source with a thermostat, UVB lighting, thermometer and hygrometer, a water dish and hides. You will find equipment in the Reptoria marketplace.