I agree with pugmomsan. I switch between brands, flavors, proteins. This should be done VERY SLOWLY . If using kibble just start with the new brand being added to old brand with a few mixed in for several weeks. I NEVER only give kibble. Not the best diet for life for a dog. You can add a little prepared freeze dried or raw again with rotating brands and proteins SLOWLY introducing. Also REAL cooked food when appropriate. I sound like a broken record but I think most people now know that lean beef, lean steak, salmon, string beans, watermelon, plain yogurt, boiled plain chicken etc. added to kibble at times is the best diet at least for my two.
