Here is a snake our dog got after tonight. I took 4 pictures and they all sucked, this is the best one. I have seen several of these snakes on my place - sometimes next to the water of the tank (pond) or in it. The snake is about 3 feet long and 2 inches in diameter. This guy here was strangely calm, and it was about 80 out there tonight. He seems to have round eyes.

Can someone help me identify him?