I live in southwest Florida, and I looked out my window the other day to see this guy staring back at me. He's about 15-18 inches long, and I watched him leap about 5 feet then scurry up a palm tree. It's hard to tell from the pictures, but he has small spines running up his back. He's much bigger and greener than the little geckos we have running around here all the time. Can anyone identify what kind of lizard this is? Some type of Iguana perhaps?