My lahsa apso has him beat by a country mile. He's a rescue dog that was found running along the freeway in L.A. He's afraid of everything. Any noise whatsoever he's off like a rocket. He'll be sitting on the couch, an envelope will slide off the back and tap him on the butt. GONE! He's two rooms away before he figures out what it was. Drop something....GONE! Open a can of soda....GONE! Vacuum...GONE! But if the doorbell rings he's instant watchdog barkin like a tough guy.