when i was a kid, i was sawing road right-of-way to a logging job and i would put my gas jugs where i expected to be when i ran out of saw gas, usually about 100 yards away or so. one time when i went to fill up, the jugs had been mauled and gas was still running out of the teeth marks punctured through the jugs. this while i was nearby cutting trees with a chain saw. kinda made me nervous for a while....