oldest living rhino iguana in captivity. Owned by the Irwin family, Australia Zoo celebrated the achievement of the aptly named Rhino (b. 23 February 1980) with a certificate presentation in his enclosure. Our rhinoceros iguana, Rhino, received a Guinness World Record for being the ‘World’s Oldest Rhinoceros Iguana’. At nearly 41 years of age, Rhino lives at Australia Zoo and loves basking in the sun while eating his favourite treat, hibiscus flowers. Rhino was born at Taronga Zoo in Sydney before being transferred to Australia Zoo on 23 November 1993. This almost doubles the age of the previous greatest lifespan on record. Rhino iguanas are native to the Caribbean, where they are found largely on the island of Hispaniola (shared by the Dominican Republic and Haiti).