The American Alligator, Alligator mississippiensis.
That looks like a really nice sized one.
http://en.wikipedia.org/wiki/American_Alligator
Thanks, Tom. I knew what he was. I forgot to put a
or
next to my post.
This guy was actually still a tyke (tank?). Probably only five or six feet. Some of the old-timers in the lake are 10 to 12 footers.