Correcting Your Dog's Food Bowl Aggression
Tip #1: Weeks 1 and 2 - Take away your dog's bowl and feed him straight from your hand for both his morning meal and his evening meal.
Tip #2: Weeks 3 and 4 - This may sound crazy, but put your dog's bowl on the floor without any food in it. Then add some food from your "hands" once every two minutes until you have given him a full portion.
Tip #3: Weeks 5 and 6 - Now begin filling his bowl "HALF" full and feed the rest from your hand every two minutes.
Tip #4: Week 7 - Put the full portion of his dog food in his bowl and have him "sit" before you let him eat. Make sure you praise, praise, and praise some more when he does this. You may not understand this, but he has to learn obedience. Then when he starts eating, pet him and tell him what a good boy he is. (more praising)
If at any point toward the end of this training session your dog shows any aggression at all, make sure you immediately "take his food away and ignore him". Wait about five minutes and then put the food back. He will get a very clear message that he can't show this behavior. He needs to know that you are in complete charge of all food resources plus any attention he is getting. They will BOTH be removed if he behaves in this way.
As you can see it will take some time to break this habit. Some dogs take less time than others, so just have awareness. This training also works for meaty bones or toys that you give him. Train him in the same way. Be patient and make sure he gets lots of praise.