 Being tropical animals, Green iguanas will thrive only in temperatures of 75 to 95 degrees Fahrenheit (24 to 32 degrees Celsius) They require a source of Ultraviolet (UVA and UVB) lighting; without proper lighting their bodies cannot develop Vitamin D, and subsequently will develop metabolic bone disease which is fatal if not treated.In some locales, iguanas are considered exotic pets, and may be prohibited (New York City and Hawaii), or a special license or permit may be needed to own an iguana.Hawaii has strict regulations regarding the import and possession of Green iguanas, violators can spend three years in jail and fined up to $200,000.