Max is 6 years old, he's been eating like that since I got him ( @ 8 weeks). Sometimes he starts growling as I'm putting the food down.
Sometimes I use one of those toys that they have to work at to dispense the food. Sometimes I feed him in increments. He is 75lbs, he's not starving, a habit I've never been able to break.
Sorry, I know I was no help.