I contacted my breeder before bringing my puppy, Apollo home. I asked her which food to feed him. She recommended a few obscure brands, so I hunted one down. I bought a large bag. She said if I transitioned him between foods, I should blend the two foods until he is used to the new one so as not to upset his dietary habits. Interestingly, she also supplied me with a sample pack of Purina Puppy Chow, so I knew he liked the food. When I got down to the bottom of the hard-to-find food, I purchased this Puppy Chow. I mixed it with well his current food--and believe it or not, he picked around the old food to just eat the Puppy Chow!! I am a believer!! I want my dog to be healthy AND I want him to be happy. It will be Puppy Chow for the rest of the year for Apollo!