Eugene--That's the way I've seen most of the water dogs I've witnessed over the years--the white belly of a trout reveals them. The first time I ever reched down in the water to check out the dead trout I was only 11 or 12 years old. When I discovered it was attached to something two feet long that looked like a prehistoric monster I did some serious high stepping. I think water dogs (or hellbenders) are probably more prevalent than we realize, at least in clean streams. They have excellent camouflage and aren't by any stretch readily discernible.