be carefull with the the Nutro foods. i've been hearing alot of bad things about them. i have a 10 month old boy. we got him at 9 weeks old and we never gave him puppy food. we used Natural Balance. we mixed it with ground beef or boneless and skinless chicken. he stopped eating it so we switched to Wellness dry and we mix in some Wellness can food. the first few days he gobbled it down. now he's backed off of it. i think he doesn't need as much to eat now. we were feedeing him a cup and a 1/2 in the AM and a cup and a 1/2 in the PM. he's 87.5 lbs. in your case the adult food for the puppy is probably ok. the puppy food for the adult i'm not sure. the puppy food for the adult might have to much protein in it. talk to your Vet. i'm sure you'll get an answer from this forum.