My Siberian, Scarlett, used to steal sandpaper. I don't think she ever swallowed any - I'd always take it away from her - it probably helped clean her teeth though.Boy you just brought back some memories....my Old English Sheepdog loved to try to chew the grill brush. He also used to steal sandpaper to chew on when my dad was doing his woodworking! Had to watch that dog like a hawk!