Ivauna- This sexy Iguana is part of my animal hybrid series. Here are some facts about Iguanas from National Geographic Despite being quite difficult to care for properly, they are among the most popular reptile pets in the United States. In fact, most captive iguanas die within the first year, and many are either turned loose by their owners or given to reptile rescue groups. Type: Reptile Diet: Herbivore Average lifespan in the wild: 20 years Size: 6.6 ft (2 m) Weight: 11 lbs (5 kg) Did you know? In Central America, where iguana meat is frequently consumed, iguanas are referred to as "bamboo chicken" or "chicken of the trees." Size relative to a 6ft (2m) man: