What do your dogs do?

Ok so my dog does this weird routine right before she eats.She puts the pebble in her mouth and starts throwing it everywhere,she then pounces on it for almost a minute,gets down real low looks at it growls and finally starts eating.It takes her literally 1/2hour to eat her food.She does this with each little pebble.Its so funny to watch...Does anyone have a dog that has a funny routine before they eat(doesnt even have to be before eating just anything)