Greetings! I feed my 6 month old female Sheltie Orijen Puppy food, 1/2 cup 3 times a day. How long should I keep her on puppy food? In case it matters, she weighs 12.4 pounds and measures about 12 1/2 inches from the ground to the top of her shoulders. The breeder I got her from told me she would be small, probably not more than 16 pounds. My 2 older male Shelties (9 and 13 years) get Fromm Grain Free. They are big boys, both between 25 - 30 pounds. I can't remember how long I kept the older ones on puppy food before transitioning to the adult food. Thanks for your help.