Food

Okay so I don’t really know how to describe it but what does it mean when my dog is like putting his nose close to his food bowl and pretending to like shovel food back in? Like it’s as if he’s using his nose to push his food bowl and circle around it but he doesn’t he the food. He’s eaten science diet since he was a puppy and has no health complications he’s a good weight and he eats it but sometimes he just does that and he’s done it for quite awhile. Sometimes in the scoop motion he’ll end up pushing it into another room. Please tell me what this means? He’s a corgi btw and 5 years old.