Iguana
The green iguana is native to South and Central America, but has become an invasive species in Florida, Texas, Hawai’I, and some Caribbean islands.
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Family: Iguanidae
Genus: Iguana
Species: Iguana iguana
Common Names: Iguana, Green Iguana, Common Green Iguana, American Iguana
Green iguanas are mostly plant-eaters, eating leaves, fruits and vegetables.
Iguanas are excellent swimmers and will often try to evade predators by diving into the nearest body of water.
Green iguanas are oviparous (egg laying). Their clutches can range from 20 to 70 eggs. After 10 to 15 weeks, the eggs hatch and the juvenile iguanas stay in small groups for the first year of life.
Iguanas can grow quite large, up to six feet long including their whip-like tail. Younger iguanas are often bright green, though this becomes more muted as they age, and large adults can appear to be gray, brown and orange. Younger iguanas from different areas can be many colors other than green. For example, in Peru, they are blue, while in Costa Rica and Mexico they may be red or orange.
They have a prominent row of spines on their head and down their back, and a large flap of skin under their chin known as a dewlap. The purpose of this flap is to help the cold-blooded iguana control its body temperature.
Their long tails are capable of being used for defense, striking out at any threats like a whip. If grabbed by a predator, the tail can break off and regenerate.
Iguanas are known for being a prominent invasive species. They have established populations that are thriving in several Caribbean islands and in much of the state of Florida, as well as parts of Texas and Hawai’i. In the 1990s, multiple hurricanes carried iguanas to new islands on uprooted trees. They were likely transported to Florida on ships carrying fruit from their native South America, and many more iguanas have come to be established in the wild through the pet trade, with iguanas either escaping or being released into the wild.
Iguanas make seemingly good pets, due to their usually docile nature. However, they can grow quite large and have specialized requirements for heating and lighting that can be difficult for inexperienced pet owners to handle. Overwhelmed pet owners that no longer wish to care for their iguanas and release them into the wild contribute to the lizard’s status as a harmful invasive species that damages local species and ecosystems.
The green iguana is a species of Least Concern.