If he is eating to fast you could buy him one of those rolling balls that the food falls out as he pushes it around. I have also seen at Petsmart bowls designed to slows your dog down when they eat to fast. Here is just an example of one, not neccesairly the one sold at Petsmart.
http://www.strictlypetsupplies.com/_022517737019-Dogit-Go-Slow-Anti-gulping-Bowl-Pink-X-small
