
Source: Wikimedia Commons
Cyclura cornuta
A large rock iguana with bony horn-like outgrowths on the snout, endemic to Hispaniola and its surrounding islands. It measures 60-136 cm, with a crest of pointed horned scales from the nape to the tail tip, and is herbivorous.
Cyclura cornuta is a large iguanid lizard endemic to the Caribbean island of Hispaniola and its surrounding islands. It varies in length from 60 to 136 cm, and its colour ranges from steely grey through dark green to brown. Its name comes from the bony, horn-like outgrowths on the snouts of males. Like other rock iguanas it is heavy-bodied and heavy-headed with strong legs and a vertically flattened tail, and a crest of pointed horned scales runs from the nape of the neck to the tip of the tail. Most adults weigh 4.56 to 9 kilograms. The species was first identified by Pierre Joseph Bonnaterre in 1789. It is known to coexist with Ricord's iguana, Cyclura ricordii, and the two are the only rock iguanas known to do so. Habitat loss, introduced predators and capture for food and for trade have reduced its numbers, and the IUCN assesses it as Endangered. An introduced population exists in Florida.
Source: Wikipedia (CC BY-SA 4.0)
The Rhinoceros Iguana lives 50-70 years.
The Rhinoceros Iguana grows to 60-136cm; adults weigh 4.56-9kg.
Origin
Hispaniola, shared by Haiti and the Dominican Republic, and surrounding islands including Beata, Saona, Cabritos and Mona; introduced to Florida
Lifespan
50-70 years
Size
60-136cm; adults weigh 4.56-9kg
Sources: Reptiles Magazine: Rhinoceros Iguana Care Info / Reptiles Magazine: Cyclura Species Rundown / Wikipedia (English) / Reptile Database
Edited & verified by: BreederDirect editorial team
The taxonomic, regulatory, and husbandry data on this page are compiled and verified against the authoritative primary sources below.
Accepted name: Cyclura cornuta (Bonnaterre, 1789)
Synonyms: Lacerta cornuta Bonnaterre, 1789, Iguana cornuta, Metopoceros cornutus
Authority databases: GBIF · Reptile Database
Nomenclature follows global taxonomic authority databases.
Listed in CITES Appendix I since June 6, 1981. It qualifies as a species designated as rare and endangered wildlife under the Act on Conservation of Endangered Species of Wild Fauna and Flora, and individual registration certificates are required for any transfers or transactions within Japan. Buying, selling, or transferring individuals without a registration certificate constitutes a violation of the Act. It is neither a specially designated animal listed in the regulations under the Act on Welfare and Management of Animals nor a specific alien species under the Alien Species Act.
Sources: CITES Appendices (Cyclura cornuta, Appendix I, effective 6 June 1981) / IUCN Red List
Regulations may change. Always verify the latest information with the relevant authorities.
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Humidity
40〜70%
Mainly plant matter such as leaves, flowers and fruit
Adjust the height of the basking lamp to give a basking surface of about 41C, and place the basking area at the far end of the enclosure so that a gradient forms. Daytime ambient is best around 27C within an acceptable range of 24-31C, with the cool zone about 5C lower. Never expose the animal to temperatures below 17C for any length of time. A lightless infrared heat projector is useful for holding night-time or large-enclosure ambient temperatures.
It is large and terrestrial, so an adult needs space equivalent to a dedicated room or an outdoor pen. Provide both flat places to lie down on and a retreat it can withdraw into to sleep. Mount the UVB lamp at the height the manufacturer specifies and combine it with the basking lamp to approximate sunlight. It digs powerfully, so build pen foundations it cannot tunnel through.
Like other rock iguanas it is strongly herbivorous, so build the diet around leaves, flowers and fruit and do not over-supply animal matter. Any plants placed in the enclosure must be non-toxic, since they will be eaten.
It is large and powerfully jawed, and mature males are strongly territorial; males must not be housed together. Patient, consistent contact over time accustoms it to people, but breeding males can turn aggressive.
It has been listed on CITES Appendix I since 6 June 1981. Under Japan's Act on Conservation of Endangered Species of Wild Fauna and Flora it is an internationally endangered species, and transferring one within Japan requires an individual registration certificate; trading or transferring an unregistered animal breaches that Act. It is neither a specified animal nor an invasive alien species under Japanese law. The IUCN assesses it as Endangered. It is bred in captivity with some regularity, so choose captive-bred stock and always check the registration certificate and origin. It is a large, decades-lived species, so secure facilities and a plan for its whole life before acquiring one.
Advanced. This is an advanced-level species. It requires specialized equipment and advanced husbandry skills with precise environmental control.
The average lifespan of Rhinoceros Iguana is 50-70 years. With proper care and nutrition, they can live a long and healthy life.
Rhinoceros Iguana typically reaches 60-136cm; adults weigh 4.56-9kg as an adult. Size may vary depending on care conditions and individual genetics.
Rhinoceros Iguana feeds on: Mainly plant matter such as leaves, flowers and fruit. Aim for a balanced diet with appropriate feeding frequency.
The price of Rhinoceros Iguana varies significantly depending on morph, size, and lineage. Check our market price page for the latest pricing information.
Last updated: September 28, 2026