That my friend is called an iguana or at least it is in Canada. I used to have one, well my brother did and my mom took care of him. His name was Iggy, he was about 3.5 ft long. Any time you let Iggy out of his terrarium he would run around the house whipping things with his tail, cutting plants in half. He would climb the blinds and terrorize the living room!! Let's just say he was rather unsocialized.