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Knob-scaled lizard (Xenosaurus grandis)

Knob-scaled lizard (Xenosaurus grandis), typical appearance of the species

Lizards · Difficulty: Experts

Key facts and care guidance for Knob-scaled lizard (Xenosaurus grandis) (origin: Mexico (cloud forest)). Adult size around 15–20 cm. Life expectancy 8–12 years. The values below are carefully researched guidance.

Short answers

Knob-scaled lizard: How big does the enclosure need to be?

From 80×50×50 cm.

Knob-scaled lizard: What temperature does it need?

Daytime 20–25 °C, at night 16–18 °C.

Knob-scaled lizard: Does it need UVB lighting?

UVB: Not essential (weak UVB is possible).

Knob-scaled lizard: How long do they live?

Life expectancy: 8–12 years.

Knob-scaled lizard: Is it suitable for beginners?

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

Climate

Daytime temperature
20–25 °C
Night temperature
16–18 °C
Humidity
75–90 %
UVB
Not essential (weak UVB is possible)

Enclosure

Minimum size
from 80×50×50 cm
Substrate
Humus with leaf litter, narrow rock crevices as hides

Feeding

Food
Insects, especially soft-bodied prey
Feeding interval
Adults 2×/week

Key facts

Adult size
15–20 cm
Life expectancy
8–12 years
Origin
Mexico (cloud forest)
Protection status
—
Brumation
Yes, a cool spell at 14–16 °C
Cohabitation
Keep as a pair - males never together. The species is notably territorial and aggressive towards conspecifics: several males fight over the same rock crevice until one is injured or permanently yields. Females tolerate each other better but need their own crevice each and separate feeding if sizes differ.

Notes

A crevice dweller from the cloud forest: cool, permanently humid and dark. Warmth and dryness are the commonest cause of death in captivity. Not one for a normal desert or rainforest tank.

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Related species

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What you need to start

To keep Knob-scaled lizard (Xenosaurus grandis) you typically need: a suitable enclosure (from 80×50×50 cm), substrate (Humus with leaf litter, narrow rock crevices as hides), 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://en.wikipedia.org/wiki/Xenosaurus_grandis, https://reptile-database.reptarium.cz/species?genus=Xenosaurus&species=grandis

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).