so I just came back from the vet and my mutt tops out at 10lbs at 4 1/2 months. she is healthy she is just small being the runt and all. the vet did recommend I free feed but from what I learned on this forum I don't think I should since I feed acana. I asked why does she eat her poop every now and then and I was told it could be because of missing vitamins. I did get something to help this but I guess that was there window to let me know that purina was the best food to give her. so as long as she is healthy im not worried but im thinking since they sell purina they have to really push it.