One of my old alpha dogs had real strong jaws, so whenever the 3 of them were given bones, he'd finish his before the other 2 were half way through thiers.
Look at them for a bit, then run towards the door and bark like someone was coming.
Wild race to the door for the other 2 and he'd calmly pick both of their bones up and being alpha simply keep them.
He did that for years and it worked every time, they never wised up to it.
Used to crack me up big time.