Honestly, I really don't think that anything Royal Canin is any good for dogs period, especially bullies. I know it's hard to take away a food that you know they love but think of it like junk food, kids love the stuff and that's kind of what this is like. I would definitely switch his food to a better quality. It probably won't help the farts but at least it's better nutritionally, right? I feed raw so I know jack about kibble but when I do have to feed them kibble I give them Fromm Beef Fritatta and they really enjoy it.