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Rhinoceros iguana

Cyclura cornuta

Conservation status IUCN: Endangered· EN
Rhinoceros iguana (Cyclura cornuta)
Photograph from Wikimedia Commons · Wikipedia article (it)

Where the name comes from

Cyclura is “ring tail”, from kýklos and ourá, for the circular rows of scales running along it; cornuta refers to the conical outgrowths on the snout of adult males, which really do look like a miniature rhinoceros’s horns. Iguana comes from the Arawak iwana, and is one of the first American words to enter the European languages.

Facts

Group
Reptiles · Reptilia
Order
Squamates
Habitat
Dry thorn scrub, coastal karst ground
Range
Hispaniola: the Dominican Republic and Haiti
Size
60–136 cm including the tail, 4.5–9 kg
Diet
Leaves, flowers, fruit, the odd insect and carcass
Lifespan
over 20 years, up to 50

Characteristics

  • 01

    The horns are found only in adult males and grow with age.

  • 02

    It digs deep burrows among roots and rocks.

  • 03

    It lays up to twenty eggs, the largest of any iguana.

What sets it apart

It is a gardener in spite of itself: swallowing whole the fruit of Hispaniola’s dry-country plants, it spreads their stones far and wide, and several of the island’s shrubs germinate far better after passing through its gut. The trouble is that dogs, pigs and mongooses have reached the island and dig up the nests: in many places not a single hatchling has emerged for years, and the populations consist almost entirely of old adults. A species that lives fifty years can look healthy for decades after it has stopped breeding.

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