I had my puppy (pictures later) in Petsmart today, and we saw the Blue rep, who asked what he was eating. I said, Blue, so he immediately assumed I was feeding the puppy food, but I told him no, I'm feeding the Wilderness. The Blue rep, and the Nutro rep thought I should switch to the puppy formula, because the Wilderness is too high protein. I showed the breeder what I was planning to switch too, she had him on Bil Jac, and I told the vet what I switched him too when I took him on Friday. I know the high protein is a no no for large breeds, but I had never heard any issues about it for a small breed. His stomach has been fine on it. I tried mixing it with the Bil Jac, but he started refusing the Bil Jac, so I gave him pumpkin for two days with it, and he had no problems. His weight gain has been fine, though for part of that he was still eating Bil Jac. Do you think I need to switch immediately to puppy, or can I wait and see?