It is one of the most iconic reptiles of the American tropics and one of the largest arboreal lizards in the continent. Iguana iguana has an elongated and robust body, an extremely long and muscular tail that can greatly exceed the body length, and strong limbs equipped with curved claws adapted for climbing. It features a distinctive dorsal crest of spines extending from the neck to the tail, as well as a prominent dewlap used for visual communication and thermoregulation. Coloration varies according to age, sex, geographic region, and breeding condition, ranging from green and olive to brown, orange, and even bluish tones. Juveniles usually display brighter green colors, while some adult males develop more striking hues during the breeding season. Its eyesight is highly developed, allowing it to detect movement, predators, and other iguanas from considerable distances.

Geographic Distribution: It is widely distributed from southern Mexico through Central America and across much of tropical and subtropical South America. Its natural range includes numerous countries within the Amazon Basin, Caribbean coastal regions, and extensive humid forest systems. It has also been introduced to several islands and regions outside its native range, where it has established wild populations in some cases. Thanks to its adaptability and dispersal ability, it can inhabit a broad variety of tropical landscapes provided that suitable vegetation and access to water are available.

Habitat: It primarily inhabits tropical rainforests, riparian forests, mangroves, secondary woodlands, wooded savannas, and densely vegetated areas. The species is strongly associated with habitats near rivers, lagoons, wetlands, and streams. It is highly arboreal and spends much of its life in trees, where it finds food, shelter, and protection from predators. It can also thrive in human-modified environments, including parks, gardens, plantations, and suburban areas with abundant vegetation.

Diet: It is predominantly herbivorous, feeding mainly on leaves, young shoots, flowers, fruits, and other plant material. Its digestive system contains specialized microorganisms that help break down cellulose from vegetation. Juveniles may occasionally consume small invertebrates or limited amounts of animal matter, although plant material remains the primary dietary component throughout life. By consuming fruits, it may contribute significantly to seed dispersal within tropical ecosystems.

Behavior: This species is mainly diurnal and relies on solar radiation to regulate its body temperature. During the morning it often basks in the sun before alternating between feeding, movement, and resting periods. When threatened, it frequently escapes by leaping from branches into water or onto the ground. It is an excellent swimmer and can remain submerged for several minutes. Adult males often display territorial behavior, particularly during the breeding season, using head-bobbing displays, body postures, and dewlap extension to communicate with rivals and potential mates.

Reproduction: Reproductive activity is generally linked to regional climatic patterns and seasonal cycles. During the breeding season, males establish territories and compete for access to females through visual displays and direct confrontations. After mating, the female excavates a burrow or nest in sandy or loose soil where she deposits a clutch that may contain several dozen eggs. No parental care is provided after egg laying. Incubation depends largely on environmental conditions, and once development is complete, hatchlings emerge independently and immediately face numerous predators and environmental challenges.

Conservation Status: Globally, it is classified as Least Concern (LC) due to its extensive distribution and overall large population size. Nevertheless, local populations may be affected by habitat loss and fragmentation, hunting for food, the pet trade, and egg collection. The preservation of tropical forests, wetlands, and riparian habitats is essential for maintaining healthy populations in the long term.

Author of this compilation: EcoRegistros – 22/06/2026