Reptoria

Cuban rock iguana (Cyclura nubila)

Cuban rock iguana (Cyclura nubila), typical appearance of the species

Iguanas · Difficulty: Expert

Key facts and care guidance for Cuban rock iguana (Cyclura nubila) (origin: Cuba and its offshore islands (including Cayo Largo del Sur)). Adult size around up to ~150 cm total length (males), a very powerful body – the largest Cyclura species. Life expectancy 25–40+ years (Cyclura are very long-lived). The values below are carefully researched guidance.

Short answers

Cuban rock iguana: How big does the enclosure need to be?

Very large; at least ~250×150×150 cm for one adult animal, better a room or outdoor facility of several m².

Cuban rock iguana: What temperature does it need?

Daytime 28–32 °C, basking spot 45–50 °C (hot basking spot), at night 22–24 °C.

Cuban rock iguana: Does it need UVB lighting?

UVB: UVB essential, high (an open-country sun species, Ferguson zone 3–4, UV index 4–6).

Cuban rock iguana: How long do they live?

Life expectancy: 25–40+ years (Cyclura are very long-lived).

Cuban rock iguana: Is it suitable for beginners?

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

Climate

Daytime temperature
28–32 °C
Night temperature
22–24 °C
Basking spot
45–50 °C (hot basking spot)
Humidity
60–80 %
UVB
UVB essential, high (an open-country sun species, Ferguson zone 3–4, UV index 4–6)

Enclosure

Minimum size
Very large; at least ~250×150×150 cm for one adult animal, better a room or outdoor facility of several m²
Substrate
A sand, soil and loam mix they can dig in (quartz sand, for example) with stones and roots as heat stores

Feeding

Food
Mostly plant-based (leaves, flowers, vegetables, herbs, little fruit), occasionally animal food (a mouse now and then)
Feeding interval
adults plant food daily to every other day

Key facts

Adult size
up to ~150 cm total length (males), a very powerful body – the largest Cyclura species
Life expectancy
25–40+ years (Cyclura are very long-lived)
Origin
Cuba and its offshore islands (including Cayo Largo del Sur)
Protection status
CITES Appendix I / EU Regulation Annex A – strictly protected, IUCN "Vulnerable". Proof of origin plus commercial-use and registration duties; only documented captive-bred animals are legal
Brumation
No real winter rest; seasonal climate and light cycles (a cooler, shorter winter spell) encourage reproduction
Cohabitation
Keep them singly; outside the mating season it is extremely aggressive and territorial. NEVER keep males together. Only temporarily 1.1 under supervision with a great deal of space and structure

Notes

It grows very large, very old and powerful – a genuine lifetime commitment with an enormous space, warmth and UV requirement. A powerful bite. CITES papers are essential. Adults are mainly plant-eating (too much animal food → gout and kidney damage).

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Related species

All species in the care wiki →

What you need to start

To keep Cuban rock iguana (Cyclura nubila) you typically need: a suitable enclosure (Very large; at least ~250×150×150 cm for one adult animal, better a room or outdoor facility of several m²), substrate (A sand, soil and loam mix they can dig in (quartz sand, for example) with stones and roots as heat stores), 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: 2 November 2026 · Editor: Reptoria editorial team · Sources include: https://en.wikipedia.org/wiki/Cyclura_nubila, https://reptile-database.reptarium.cz/species?genus=Cyclura&species=cyclura_nubila

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).