I see a lot of people saying their puppies have loose stools on Innova. We switched recently got a 10 week old pug who was being fed Iams Puppy Food. I bought him Innova Puppy Food and made the mistake of immediately switching him over. He had very loose stools! So then I added back in some Iams and slowly weened him off Iams and onto Innova over the course of this past week. His stool was healthy looking and not too hard but not loose either. I also fed him too much one time and he had loose stool again. But now that I've slightly reduced the amount his stool is perfect again. LOL! He seems very playful and alert. Not any more gassy than usual. He poops less and takes longer to have to go poop, than when he was on Iams. So I would say that if your dog is having loose stools on Innova, you may have switched him too fast or you are feeding him too much. This is an AWESOME food! It does have flaxseed in it, which some dogs are allergic to. If this doesn't work, try Innova's California Natural. Good luck