“The green iguana (Iguana iguana), also known as common iguana or American iguana, is a large, arboreal, mostly herbivorous species of lizard of the genus Iguana. It is native to Central, South America, and the Caribbean. Usually, this animal is simply called the iguana. The green iguana ranges over a large geographic area, from southern Brazil and Paraguay as far north as Mexico and the Caribbean Islands. They have been introduced from South America to Puerto Rico and are very common throughout the island, where they are colloquially known as “Gallina de palo” and considered an invasive species; in the United States feral populations also exist in South Florida (including the Florida Keys), Hawaii, the U.S. Virgin Islands and the Rio Grande Valley of Texas.
Despite their name, green iguanas can come in different colors. In southern countries of their range, such as Peru, green iguanas appear bluish in color with bold blue markings. On islands such as Bonaire, Curaçao, Aruba, and Grenada, a green iguana’s color may range from green to lavender, black, and even pink. Green iguanas from the western region of Costa Rica are red and animals of the northern ranges, such as Mexico, appear orange. Juvenile green iguanas from El Salvador are often bright blue as babies, however they lose this color as they get older.”