When we give our dog a 'varied' diet, we are anthropomorphizing, to use a fancy word meaning to give it human characteristics,
But a dog's gut flora is far more specialized and less abundant than ours. Their gut flora is accustomed to processing a specific kind of food. Abrupt changes in diet can disrupt this gut flora. As a result, your dog may not fully digest and absorb new food at first. An abrupt change in diet may even cause diarrhea. So when switching food, we recommend mixing increasing amounts of the new food into the old food over several days. This lets your dog get used to the new food gradually.
Use the transition table below to gradually make the switch.