I have my Maltese 7mo. on the Hundchen Flocken Puppy (lamb) Protein, Min 28% Fat, Min 14% Fiber, Max 4% Moisture, Max 10% and Chelsea who's 17 mo on the same, I did put Chelsea on the adult solid gold and her poop was huge, which I think she’s not absorbing the food. Do you think it’s okay to keep them both on the same food? They both don’t eat that much. Chelsea was a little over weight and once I put her on that she did start to loss weight.