I couldn't agree with you more about the beauty of Raystown Lake. I can't imagine how scared you must have gotten when your dog started going into a panic and swimming in circles. I'm sure it must have been one of the huge fish there nipping at it's tail. I'll bet there are fish there that even weigh more than your dog.
I'm sure you'll be cautous in the the future when going into the lake. I've always considered Raystown a great place to go boating but going into the lake kind of creeps me out. Although I've gotten out of the boat in the middle of the lake and enjoyed floating around on an old intertube, but that was when I was a kid. I don't know if I'd do that now..ha!