captured on Grand Cayman in 1950 by naturalist Ira Thompson was imported to the United States in 1985 by Ramon Noegel and sold to reptile importer and breeder, Tom Crutchfield in 1990. Crutchfield donated Godzilla to the Gladys Porter Zoo in Brownsville, Texas in 1997 and the lizard remained there until its death in 2004. Thompson estimated Godzilla to be 15 years of age at the time of his capture. At an estimated 69 years of age (54 of which were spent in captivity), Godzilla may be the world's longest-living lizard for which there is reliable record. A closely related Lesser Caymans iguana (C. nubila caymanensis) has been documented as living 33 years in captivity. Reproduction Mating occurs from May through June. Copulation is preceded by numerous head-bobs on the part of the male, who then circles around behind the female and grasps the nape of her neck. He then attempts to restrain the female in order to manoeuvre his tail under hers to position himself for intromission (copulation). Copulation generally lasts from 30 to 90 seconds, and a pair is rarely observed mating more than once or twice a day. A clutch of anywhere from 1 to 21 eggs are usually laid in June or July depending on the size and age of the female, in nests excavated in pockets of earth exposed to the sun. Several exploratory nests are begun before one is completed. These burrows can range from to over in length, with an enlarged chamber at its terminal portion to allow the female to turn around. The temperature within nests that have been monitored by researchers remained a constant throughout the incubation period which ranges from 65 to 90 days. The blue iguana's eggs are among the largest laid by any lizard. Individuals are aggressively territorial from the age of about three months onward. They typically reach sexual maturity after four years of age in captivity. Conservation Endangered status The blue iguana is listed as endangered on the IUCN Red List. In 1988 the British researcher Roger Avery spent two weeks on the island and only observed three animals. Surveys in 2003 indicated a total population in the range of 5–15 individuals. In 2006 the iguana was one of the most endangered lizards on Earth. Restored free-roaming subpopulations in the Queen Elizabeth II Botanic Park and the Salina Reserve numbered approximately 125 individuals in total after