Your bulldogs DNA will determine how big he will get, not the dog food. Of course, too much dog food will make your bully big, but not in a good "weigh"! How much does your bully weigh? Mine is a male, 1 year old and weighs 49 lbs. I was told he was going to be " huge" but I think he is on the small side. I don't mind. He's just compact! As for "good" dog food, there is a great link on this site that rates all the dog foods. It will be trial and error though. My bully has had terrible digestive issues since getting him and we tried a good number of those foods. Turns out it was too rich for him and he is on a prescription diet and doing beautifully. But this is an exception. I think there are lots of good foods out there, you have to find what works for you!! Post some pics of your bully!! Would love to see him!!