A week’s transition will work if the dog is eating a similar food, but in many cases they are not and it takes a lot longer to adjust. For example in your case, let’s say your diet consists of baked chicken with a baked sweet potato everyday for every meal. Then next week, every day you replace one or more meals with fried chicken, mashed potatoes and gravy, and by the end of the week that is your diet. I know my body would go on strike if I did that, and basically that is what you are doing going from Natural Balance to Earthborn Primitive. If you had already been eating a diet of hamburger and fries everyday, then it would not be as drastic of a change to your body to start replacing with a fried chicken meal. Hopefully this example gives you a better perspective. Not only does the digestive track need time to adjust, the rest of the organs in the body will need time.
