Little Cayman has one of the densest populations of large rock iguanas anywhere in the world. They sun themselves on the road in the morning, wander into gardens, and lumber along the airfield perimeter unbothered by aircraft. Many are tagged for monitoring by the National Trust — coloured beads woven onto their crests identify individuals. Some are over a metre long from nose to tail tip.
The best place to see them is more or less anywhere on the island — drive slowly, look on the road verges. Around the dive lodges and Booby Pond Nature Reserve they are particularly visible. Do not feed them or pick them up; the law is strict and the bite is serious. The Little Cayman Iguana Conservation Project will happily tell you more if you stop by the National Trust visitor centre at Booby Pond.