vets know next to nothing about nutrition. so do NOT rely on what they say to be true. puppy food does make dogs grow way to fast, I really noticed it between happy and misty, happy grew up on puppy food, and grew REALLY fast, like 2 inches in one week. misty grew up on RAW, and man did I ever notice the differnace is speed of growth, misty grew VERY slow, like maybe 2 inches a month. usally only 1 inch a month, mistys structure is also WAYYYYYYY better then happys.