We got 2 very small chihuahua puppies and they were feeding them some store puppy food so we bought a bag of the same stuff and they just ate a little bit. Then we found out about Dr. Marty's food and wow what a dramatic difference it made! They can't wait to eat now. About a week later their fur was starting to fill in and it is so shiny and soft now! They went from sleepy groggy puppies to happy, lively little guys! I would definitely recommend this food!