Iguana Species · Central America (Ctenosaura similis)
Black Iguana
Common 'garrobo' of Central America — frequently eaten, occasionally kept inappropriately as pets.
By the WARN Research & Conservation TeamChecked against IUCN Red List & CITES sourcesLast updated
In brief
The Black iguana (Ctenosaura similis) — common 'garrobo' of Central America — is abundant locally yet unsuitable as a pet due to speed, strong bite and large outdoor enclosure needs. Its defining trait is wild lizard behaviour on ruins and roadsides, not domesticated companion temperament.
Black Iguana: At a Glance
| Origin | Central America (Ctenosaura similis) |
|---|---|
| Size | Medium (1.5–2 kg) |
| Typical weight | 1.5–2 kg (3.3–4.4 lb); large active terrestrial iguana |
| Lifespan | 15–20 years (green iguana in captivity); wild species vary |
| Scales & colour | Dark grey-black banded scales; keeled tail spines. Juveniles brighter banded — darkens with age. |
| Temperament | Fast, aggressive when cornered, omnivorous |
| Conservation note | Wild conservation only — not domestic pets. Abundant in range yet pet trade collection adds unnecessary pressure alongside bushmeat use. |
History & Origins
Black spiny-tailed iguanas thrive on Central American infrastructure edges — ruins, roads, beaches. Locals hunt for food; tourists misinterpret habituation as tameness. Pet trade exports defensive fast lizards to keepers unprepared for enclosure scale and biting — rescues rare but welfare failures common.
Black Iguana Fun Facts
- Among most abundant large lizards in Central America.
- Can run bipedally at high speed when escaping.
- Often seen on Mayan ruins — culturally familiar, not domesticated.
- Omnivorous diet includes insects and small animals opportunistically.
Black Iguana Common Health Issues
Conditions seen more often in this breed, and how owners and vets help manage them. This is general guidance, not veterinary advice — always speak to your vet.
Inappropriate captivity stress
Wild defensive behaviour persists — pacing and aggression in tanks.
Care: Do not keep as pets; support habitat rather than collection.
Metabolic bone disease
Indoor keeping without UVB causes MBD.
Care: Avoid purchase — species not suited to British indoor vivaria.
Habitat loss (wild)
Development despite local abundance reduces long-term sustainability.
Care: Reduce pet trade demand contributing to collection pressure.
Most iguanas are not beginner pets
Green iguanas grow to two metres and live twenty years — most owners are unprepared. Released pets become invasive. Consider adoption only if you can meet specialist reptile welfare standards.
