Green Iguana
Iguana iguana · Reptile, Vertebrate, Cold-blooded, Wild
Animal Family
Family Iguanidae, Order Squamata, Class Reptilia
Animal Category
Reptile/Amphibian, Invasive Species
Breed / Variety
Common Green Iguana
Conservation Status
IUCN Red List status is Least Concern, with a stable to increasing population trend in native ranges and invasive abundance elsewhere.
About This Creature
Large arborial lizard ranging from 1.5 to 2 meters in length including the tail, and weighing up to 5-9 kg. Bright green coloration with darker bands, prominent dorsal spikes, and a large round sub-tympanic scale (ear shield) below the eye.
Physical Characteristics
Robust body structure, powerful limbs with sharp claws, long whip-like tail, distinct dewlap under the chin for thermoregulation and communication, row of flexible dorsal spines running down the back, and excellent vision capable of detecting shapes and movement at long distances.
Behavior & Temperament
Diurnal and arboreal, often basking in the sun to regulate body temperature. Highly territorial males display dominance through head-bobbing and dewlap extension. Agile climbers and strong swimmers, using their tails for defense and propulsion.
Habitat & Diet
Origin Region
Native to Central and South America, as well as Caribbean islands; introduced to regions like Florida, Hawaii, and parts of Asia.
Habitat
Tropical rainforests and arid scrublands; primarily arboreal, spending significant time in trees near water sources.
Diet & Nutrition
Strictly herbivorous, feeding on leaves, flowers, fruit, and growing shoots of various plants. Requires high plant-based calcium and fiber.
Lifespan & Health
Lifespan of 15 to 20 years in captivity, typically shorter in the wild due to predation and environmental factors. Prone to metabolic bone disease if lighting and diet are improper.
Special Characteristics
Possesses a parietal eye (third eye) on top of the head used to sense changes in light and shadow for predator detection. Can detach its tail (autotomy) to escape predators, though it regrows partially.
Ecological Information
Acts as an important seed disperser in its native tropical ecosystem. In introduced regions, large populations can alter local flora and cause damage to infrastructure and landscaping.