[Pitlove]

Hi Anja- Wow a pitbull that’s 40lbs at 16 weeks? Sounds like you may have an American Bully. A few foods that you could look into are: Fromm Gold Large Breed Puppy, NutriSource Large Breed Puppy, Precise Holistic Complete Large & Giant Breed Puppy, Orijen Puppy Large and even NutriSource Large Breed Adult Chicken and Rice which despite the name is an all life stages formula with safe calcium levels.