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Green Iguana

Iguana iguana

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Green Iguana

🌍 Overview

Green iguanas are large arboreal herbivores from Central and South America, and the gap between what they are sold as and what they become is the widest of any pet reptile. A hatchling is six inches and costs very little. An adult reaches six feet or more, weighs up to twenty pounds, needs a custom enclosure the size of a wardrobe, and lives twenty years in captivity. They are strict herbivores whose gut relies on fermenting leafy greens, so the classic mistakes are protein and insufficient calcium, both of which produce metabolic bone disease. Males in breeding condition can become genuinely aggressive. Escaped and released animals have established breeding populations in Florida, Hawaii and Puerto Rico.

πŸ“‹ Quick Facts

Native Range

Central and South America, from Mexico to Paraguay, plus many introduced populations

Natural Habitat

Rainforest canopy and riverside trees, rarely far from water

Adult Size

6 feet (1.8 m) or more including tail, adult males recorded to 7 feet; 10-20 lbs

Wild Diet

Leaves, flowers and fruit; almost entirely herbivorous

Wild Lifespan

About 8 years in the wild (Animal Diversity Web); the widely quoted 15-20 years is a captive figure

Conservation Status

Least Concern (IUCN), listed on CITES Appendix II

πŸ“œ History

The green iguana was placed on CITES Appendix II on February 4, 1977, which means the decades that followed are documented in permit records. Commercial farms in Honduras, El Salvador, Colombia and Panama scaled up through the 1980s and 1990s to supply the American market, and imports peaked at more than 800,000 animals in 1995 and roughly a million the year after. Iguana imports accounted for roughly a third of all reptiles brought into the United States in 1997. Between 1996 and 2012 the species made up close to half of the country's entire live reptile trade, making it the most heavily traded reptile in the world.

βš–οΈ Compare

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Green Iguana

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Human

Adult Size

6 feet (1.8 m) or more including tail, adult males recorded to 7 feet; 10-20 lbs

5-6 feet (150-185 cm); ~135-200 lbs

Wild Lifespan

About 8 years in the wild (Animal Diversity Web); the widely quoted 15-20 years is a captive figure

~73 years (global average)

Wild Diet

Leaves, flowers and fruit; almost entirely herbivorous

Omnivorous - eats just about anything

Native Range

Central and South America, from Mexico to Paraguay, plus many introduced populations

Global - originated in Africa roughly 300,000 years ago

Natural Habitat

Rainforest canopy and riverside trees, rarely far from water

Everywhere from arctic tundra to tropical megacities

Conservation Status

Least Concern (IUCN), listed on CITES Appendix II

Least Concern (8+ billion and counting)

🧠 Test Yourself

Question 1 of 40 pts

What's the Green Iguana's native range?

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πŸ€“ Did You Know?

Green iguanas have a pale scale on the top of the head called the parietal eye. It is a genuine third eye with a lens and a retina, wired to the pineal gland rather than to vision, and it detects shadow moving overhead. It is an early warning system for birds of prey.