When I got my 13 month, 60 lb. boy from the breeder, she provided me a bag of Victor High Pro Plus kibble food and said I should only give him 1 cup / once per day. Reading the Victor feeding guide, they recommend 3 1/3 cups / day. At the breeder, his activity was more limited, he had a kennel with a 30 foot run. Now that he is with us, his new "sister", a Labradoodle (looks more like a Standard Poodle) keeps him hopping in the backyard; at 7 months she is kind a hyperactive nuisance. I have to constantly call her off to give him a break to come back inside with the A/C and cool tile floors.
He still gets the Victor kibble, but a reduced portion, and now mixed with a cooked chicken tenderloin or thigh, and/or an egg, or an occasional liver; and is fed twice/day, both morning and night. He is a little chunky now (65 lbs), but it has been a hot humid summer, and he & I just started taking our walks again about two nights ago. Neither one of us likes the heat much.