Green Iguana
⚡ Key Facts & Quick Answers (AEO Summary)
- Taxonomic Class: Reptiles (Reptilia)
- Dietary Niche: Herbivore
- Max Speed: 35 km/h (22 mph) running
- Adult Weight: 4 - 9 kg (9 - 20 lbs)
- Typical Lifespan: 15 - 20 years
- Primary Habitat: Tropical rainforest canopy near rivers
- Native Region: Central and South America
- IUCN Red List: Least Concern
📊 Physical & Biological Metrics
🧬 Scientific Taxonomy & Biological Classification
| Kingdom | Animalia |
|---|---|
| Phylum | Chordata |
| Class | Reptilia |
| Order | Squamata |
| Family | Iguanidae |
| Genus | Iguana |
| Species Binomial | Iguana iguana |
📖 1. Species Overview
The Green Iguana is a large, arboreal lizard native to the tropical rainforests of Central and South America. Spending most of their time in the high canopy, these herbivorous reptiles are excellent climbers and swimmers. They have become invasive in some non-native regions.
🦿 2. Physical Appearance, Anatomy & Adaptations
Green iguanas are large lizards with a row of spines running along their backs and tails. They have a large dewlap (skin fold) under their throats and a circular subtympanic shield scale on their cheeks. Despite their name, their color varies from green to bright orange or brown.
🗺️ 3. Habitat, Geographic Distribution & Territorial Range
They inhabit the canopy of tropical rainforests, typically near rivers or lakes. They are diurnal, active during the day to bask in the sun and feed. If threatened, iguanas will dive from branches into the water below to swim away, or whip their muscular tails to defend themselves.
🥩 4. Diet, Feeding Strategy & Hunting Tactics
They are strictly herbivorous, feeding on leaves, buds, flowers, and fruit of forest canopy plants. They have sharp, serrated teeth designed to shred tough leaves. Young iguanas occasionally eat insects, but adults digest plant matter using specialized hindgut fermentation.
🐣 5. Reproduction, Lifecycle & Social Hierarchy
Mating occurs in the dry season. The female digs a nesting burrow in sandy soil, laying a clutch of 20 to 70 eggs before covering it and leaving. The eggs incubate for 90 to 120 days. Hatchlings emerge together and are vulnerable to predators. Green iguanas live 15 to 20 years.
🛡️ 6. Conservation Status, Population Threats & Protection
Classified as Least Concern. Green iguanas are common and highly adaptable. In Central America, they are bred in farms for meat and pet trade. However, in Florida and Caribbean islands, they have become an invasive pest, disrupting local ecosystems and infrastructure.
💡 Fascinating Facts & Trivia
- Green iguanas have a 'third eye' (parietal eye) on top of their heads that can detect changes in light, helping them spot predatory birds from above.
- If caught by a predator, they can drop their tails (caudal autotomy) to escape, growing a new one over several months.
- They can fall from heights of up to 15 meters (50 feet) onto the forest floor without getting injured.
❓ Frequently Asked Questions (FAQ)
Direct authoritative answers regarding the biology, feeding habits, and habitat of the Green Iguana.
The Green Iguana is scientifically classified as Iguana iguana. It belongs to the genus Iguana within the family Iguanidae, class Reptilia, and phylum Chordata.
In the wild, Green Iguanas inhabit Tropical rainforest canopy near rivers. Their native geographic range primarily spans Central and South America.
The Green Iguana is classified as a Herbivore. It feeds primarily on specialized nutrients suited to its ecological niche in Tropical rainforest canopy near rivers.
A Green Iguana can achieve top speeds of 35 km/h (22 mph) running and weighs approximately 4 - 9 kg (9 - 20 lbs). Its expected natural lifespan is 15 - 20 years.
The Green Iguana (Iguana iguana) is currently designated as Least Concern on the IUCN Red List of Threatened Species.
Cite this Article
FaunaWiki Zoological Database (2026). "Green Iguana (Iguana iguana) Species Profile."
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