Blue Iguana (2 of 2)

Caption: Ranging between gray and turquoise blue in color, male iguanas become bluer during the mating season.

Credit: Julie Larsen Maher/Wildlife Conservation Society

Usage Restrictions: One time usage only. Must use with the following credit: Julie Larsen Maher/Wildlife Conservation Society

Related news release: Grand Cayman blue iguana: Back from the brink of extinction