Ok, so I got some Royal Canin to switch Deuce to. He didn't do good on the Authority Harvest Baked. He had the runs for like 3 weeks. Well I wanted to know your personal preferences on these two foods, Royal Canin and DVP. Which would you suggest? Is one more like Authority than the other? If so, I don't want that one. In your opinion, which should I try, and which is best?