Iguanas are large lizards that live in tropical dry forests, shrublands and rocky outcroppings in the Caribbean and the Americas. Their tail makes up half their body length! They live mostly solitary lives on land, using burrows or rock crevices for shelter or nesting. By day, they forage for vegetation and an occasional invertebrate. Males can be aggressive about their territories, using head-bobbing displays to communicate with other males, or with females during mating season. Females lay up to 20 or more eggs in a nest dug into the ground. The eggs incubate for up to 3 months, with mom sometimes guarding the nest for a few weeks. Iguanas can live up to 40 years or more.
A number of iguana species are threatened with extinction because of habitat destruction, hunting, trade and predation by invasive animals. Some species have only a few dozen or hundred individuals left. Captive breeding programs have helped save some of them. The Indianapolis Zoo was the first zoo to successfully breed Jamaican rock iguanas in 2006, doubling the population in human care at zoos at that time! You can help local wildlife thrive by keeping pets such as cats indoors to protect native species from predation.