Reptoria

Masked spiny lizard (Acanthosaura crucigera)

Masked spiny lizard (Acanthosaura crucigera), typical appearance of the species

Agamas · Difficulty: Intermediate

Key facts and care guidance for Masked spiny lizard (Acanthosaura crucigera) (origin: Myanmar, Thailand, West Malaysia and Cambodia; hill and montane forests). Adult size around approx. 22–25 cm total length (males ~25 cm, females ~21–23 cm). Life expectancy approx. 8–10 years. The values below are carefully researched guidance.

Short answers

Masked spiny lizard: How big does the enclosure need to be?

80×60×100 cm for one adult animal (arboreal, height over length).

Masked spiny lizard: What temperature does it need?

Daytime 24–27 °C, basking spot local warm spot up to 30 °C (sensitive to heat, keep the enclosure below 30 °C), at night 18–21 °C.

Masked spiny lizard: Does it need UVB lighting?

UVB: UVB recommended (a forest dweller, Ferguson zone 1–2, UV index 1–3; a 6 % T5 tube).

Masked spiny lizard: How long do they live?

Life expectancy: approx. 8–10 years.

Masked spiny lizard: Is it suitable for beginners?

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

Climate

Daytime temperature
24–27 °C
Night temperature
18–21 °C
Basking spot
local warm spot up to 30 °C (sensitive to heat, keep the enclosure below 30 °C)
Humidity
70–80 % by day, up to 90–100 % at night
UVB
UVB recommended (a forest dweller, Ferguson zone 1–2, UV index 1–3; a 6 % T5 tube)

Enclosure

Minimum size
80×60×100 cm for one adult animal (arboreal, height over length)
Substrate
Coco humus or forest floor with leaf litter and moss, plus a drainage layer

Feeding

Food
Insectivorous: earthworms (preferred), crickets, house crickets, roaches, larvae; dusted with calcium and D3
Feeding interval
adults 2–3×/week, juveniles daily to every other day

Key facts

Adult size
approx. 22–25 cm total length (males ~25 cm, females ~21–23 cm)
Life expectancy
approx. 8–10 years
Origin
Myanmar, Thailand, West Malaysia and Cambodia; hill and montane forests
Protection status
Not listed under CITES (as far as research shows); often wild-caught – look for captive breeding and proof of origin
Brumation
No real winter dormancy. For breeding stimulation, a cooler, drier period of 6–8 weeks with shorter lighting (about 11 instead of 13 hours) and night-time values around 20 °C is enough. Even then it should not go permanently below 21 °C.
Cohabitation
Territorial. Keeping them singly is the standard; a harem of one male plus several females is possible in a large, structured enclosure; NEVER two males

Notes

The "crucifix lizard". One of the longest-kept species in the genus. Gravid females can become aggressive. No heat rock or strong spot is needed (a forest dweller).

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Related species

All species in the care wiki →

What you need to start

To keep Masked spiny lizard (Acanthosaura crucigera) you typically need: a suitable enclosure (80×60×100 cm for one adult animal (arboreal, height over length)), substrate (Coco humus or forest floor with leaf litter and moss, plus a drainage layer), 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: reptile-database.reptarium.cz, Wikipedia EN, thainationalparks.com, BML-Gutachten Mindestanforderungen Reptilien 1997 (amtlich), EU-Verordnung 2026/1383 (Anhang A-D, amtlich)

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).