As big and imposing as our chow / lab mix is, he loves everyone from the mail carrier to the Fed-Ex guy and UPS too. He knows he will get a treat from all of them and he waits patiently at the fence (he's in a fenced front yard) for his 'biscuit'
Never soiled the back seat with his 'burger'. It never gets that far (seat). Always consumed in one bite, maybe 2. When e see's I'm driving into the Golden Arches, he's sitting up, ears erect, waiting for the drive through and his burger. Some attendants are a little hesitant because he looks imposing but I always assure them he's a big muffin. He's laying next to me right now, snoring.