A worldwide community photographing and learning about wildlife
I think it's an Eastern Fence Lizard (Sceloporus undulatus) mainly because of the spotting's location.
http://en.wikipedia.org/wiki/Eastern_fen...
It also looks a lot like a Florida Scrub Lizard (Sceloporus woodi) but that one is more rare and it doesn't fit this distribution map:
http://beetlesinthebush.wordpress.com/20...
But hey you never know!