Hi, I'm not familiar with the RC Veterinary brand of dog food. Is this Royal Canin? I know that Royal Canin is not considered the best food, it is rated a 3 Star food on the dog food ratings. My two were fed Royal Canin by the breeder I bought them from, but I knew by reading the labels and researching dog foods that it wasn't then best choice of food, not the worst either, but it contains a lot of fillers, and corn, which is not good for dogs. My vet also sells this brand in her office, but I learned while researching, that both medical doctors and vets don't get a lot of training in school on Nutrition. They mainly learn how to diagnose and treat diseases. My female Blossom is allergic to chicken, salmon, corn and grains, and we switched her food 4 times before we found a brand she tolerated. We feed both our guys Fromm's Beef Frittata, and they both do really well on it. Having said that every Bully is different and what brand works for one, doesn't always work for another, and some members use Royal Canin, and their dogs do well on it. My Blossom had warm red ears, a pink face, chin acne or rashes, he licked her paws a lot, and she pooped more. It's really trial and error to find a food that your bully tolerates.