Perentie (Varanus giganteus)
Monitors & tegus · Difficulty: Expert
Key facts and care guidance for Perentie (Varanus giganteus) (origin: The arid zones of central and Western Australia (rocks, deserts, open country)). Adult size around females ~1.3–1.5 m, males ~2 m, up to 2.5 m total length; the largest monitor in Australia. Life expectancy 15–20+ years (up to ~30). The values below are carefully researched guidance.
Short answers
Perentie: How big does the enclosure need to be?
Very large; a guide figure for an outdoor facility or aviary is at least 6×6 m, indoors at least 400×200×200 cm (indoors hardly meets their needs).
Perentie: What temperature does it need?
Daytime 30–36 °C, basking spot 50–65 °C, at night 20–24 °C.
Perentie: Does it need UVB lighting?
UVB: UVB needed, high (Ferguson zone 3–4, UV index 4–6).
Perentie: How long do they live?
Life expectancy: 15–20+ years (up to ~30).
Perentie: Is it suitable for beginners?
No – better suited to experienced keepers (difficulty: Expert).
Climate
- Daytime temperature
- 30–36 °C
- Night temperature
- 20–24 °C
- Basking spot
- 50–65 °C
- Humidity
- 30–50 % (arid)
- UVB
- UVB needed, high (Ferguson zone 3–4, UV index 4–6)
Enclosure
- Minimum size
- Very large; a guide figure for an outdoor facility or aviary is at least 6×6 m, indoors at least 400×200×200 cm (indoors hardly meets their needs)
- Substrate
- Deep sand or sand-loam they can dig in, rock structures and caves, a water basin deep enough to submerge in
Feeding
- Food
- Rodents, chicks or quail, fish, egg, large insects, carrion
- Feeding interval
- adults 1–2×/week, juveniles 3×/week to daily
Key facts
- Adult size
- females ~1.3–1.5 m, males ~2 m, up to 2.5 m total length; the largest monitor in Australia
- Life expectancy
- 15–20+ years (up to ~30)
- Origin
- The arid zones of central and Western Australia (rocks, deserts, open country)
- Protection status
- CITES Appendix II / EU Regulation Annex B; Australia: no export of wild animals (EPBC Act) → very rare, captive-bred animals only
- Brumation
- A slight cool spell in winter is possible; no strict brumation
- Cohabitation
- Keep them singly; strictly territorial and solitary, potentially cannibalistic, and males are never kept together.
Notes
Australia's largest monitor, extremely rare in captivity, with an enormous space requirement; shy and fast. Only for specialists with a large outdoor facility. The figures come among other sources from a specialist husbandry manual (nswfmpa) and varanus.au.
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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
What you need to start
To keep Perentie (Varanus giganteus) you typically need: a suitable enclosure (Very large; a guide figure for an outdoor facility or aviary is at least 6×6 m, indoors at least 400×200×200 cm (indoors hardly meets their needs)), substrate (Deep sand or sand-loam they can dig in, rock structures and caves, a water basin deep enough to submerge in), 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: 9 October 2026 · Editor: Reptoria editorial team · Sources include: https://de.wikipedia.org/wiki/Riesenwaran, https://reptile-database.reptarium.cz/species?genus=Varanus&species=giganteus
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).