I’ve never had a cat who didn’t pull this stunt. Often they’ll do it even with their bowl half full. I’m not entirely sure why, except that I think cats and squirrels (who store away nuts) share some DNA in common.
HOBO: What's wrong?
MITTENS: I'm almost out of food!
HOBO: Wait, you weren't hungry?
MITTENS: Chance favors only the prepared mind.