My little guy also does that, I did read a post in here to pineapple with their food, which I did, in both of my dogs food and he is still doing it. Some times he likes to throw it like a toy. He is such a sicko 

 I know he gets enough to eat and lord knows he has enough toys...any suggestions please help us..He knows he is not suppose to do it cos when I see him he takes off 90 miles an hour to get away from me..