Green Iguana in St. Thomas

I was having a drink on a patio overlooking Charlotte Amalie in St. Thomas when this green iguana ambled by.  Beautiful creature.  They socially interact with a series of head bobs.  Juveniles stay as a group the first year of their lives, and the males in the group use their bodies to protect and shield the females from predators - the only species of reptile known to exhibit such behavior.