I saw this Brown Watersnake in a pond at the University of Tennessee Arboretum in Oak Ridge. When I went to the other side of the pond to get a closer look, it had slid into deeper water. They eat frogs and fish. East Tennessee does not have venomous water snakes, so this snake is no threat. Brown water snakes may not have venom, but they will bite if handled. Like many other snakes, it will defecate on the person who captures it. I have caught baby water snakes to show the children in my classes. They are nasty little snakes to handle!