Hi lovemylab –
I think high protein grain-free foods are best for all dogs. There’s a whole topic area here dedicated to large and giant breed puppy nutrition:
/forums/topic/large-and-giant-breed-puppy-nutrition/
You don’t need to feed a “large breed” specific puppy food. You need to look for a food with appropriate calcium levels that is approved for “growth” or “all life stages.” Here is a list of 4 and 5 star grain-free foods appropriate for large breed puppies:
https://docs.google.com/file/d/0BwApI_dhlbnFQXNYZW01VzRVV00/edit?usp=sharing
