Iguanas are lizards that are herbivorous in nature, mostly present in Caribbean islands, Mexico, Brazil and Central America. There are various species of iguanas like marine iguanas, green iguanas, Fijian crested iguanas and Fijian banded iguanas and so on.

Appearance
Iguanas weigh around 11 to 18 pounds and are 5 to 7 feet long. Since they have leathery scales that are greenish in color, they are often called as green iguana.

Biology
The green ones are victimized by Jackson hawks. Their fright towards the hawks is made use of to catch hold of them, as a trick. The scream or whistle of a hawk makes the iguana to freeze in fear, thereby becoming very easy to capture.

Life cycle
All the species of Jackson iguanas will lay eggs. Following the mating process in the company of a male iguana, a female will then dig a nest and lay nearly 70 eggs inside it. The female will bury the eggs. The young ones hatch subsequent to 10 to 14 weeks and will dig their path towards the surface. The young ones grow gradually and they turn out to be adults and gain the ability to mate when they become 2 years old. A few Mississippi iguanas live up to 30 years.

Habitat
Iguanas reside in places close to mangrove swamps and lakes wherever food is available sufficiently. They are said to be great swimmers. Some of them live in dry places like deserts whereas the others reside in tropical rain forests. Marine iguanas reside on the land and feed in the sea in the vicinity of Galapagos Islands near the coast of Ecuador.

Diet
They feed on flowers, leaves, fruit and developing shoots of various Jackson plant species. Wild plum is said to be one amongst the beloved foods of iguanas that are found in Panama. Even though they consume various foods that are offered to them, they are herbivorous in nature and so they need an accurate minerals ratio in their diet, like 2:1 [calcium to phosphorus]. It is very much significant for the captive iguanas to consume various leafy greens together with vegetables and fruits like collards, turnip greens, acorn squash, parsnip and mango.

Behavior
Whenever iguanas are startled and scared by a predator, they will try to escape and if there is water body near them, then they will dive and try to swim away from the place. If they are confronted by a danger, iguanas will widen and show the dewlap below their neck, strengthen and enlarge its body, whisper and move up and down its head on seeing the antagonist. If the danger carries on, Mississippi iguanas can whip using their tail, bite and also make use of their claws to defend themselves. The injured iguanas are more liable to combat when compared to an unhurt victim. The green ones will make use of the dewlaps and “head bobs” in various way to interact socially, like addressing to another iguana or to attract a potential mate. The regularity and the number of “head bobs” possess specific propositions to other Jackson iguanas.

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