Our visitor

I was talking to Keith on the phone an hour or so ago and I shrieked in his ear that there was a HUGE lizard in our backyard. I've never seen a lizard this big (iguana?) out in the wild, so I was thinking it might be some one's pet. Our neighbors in Kodiak had a huge iguana and we were responsible for going over to feed him every time the neighbors went out of town. Keith suggested I call animal control to see if anyone has called about a missing iguana, or it could just be a wild iguana. The animal control people suggested I keep an eye on it until they get here, so I rolled a few grapes over to him (her?) and watched him for about 30 minutes until he went into the neighbor's yard. Animal control informs me that these animals are common in more southern Florida, but not usually seen in the Orlando area.
I will now hesitate every time I go outside, wondering if the sticks by the pool pump are really sticks, or if they are gigantic iguana tails.
I watched him climb a tree in our backyard. I had no idea he could do that!
And as he sad hiding in the tree, it made me wonder if he is the reason that tree is so noisy at night. Keith and I sit outside on most nights when he is home and it always sounds like a squirrel party in that one tree. Perhaps it's an iguana party instead?