Hi RowdyDog – Large breed puppies seem to grow by leaps and bounds. The vet said our Golden grew faster than any dog he’d ever seen! People will tell you that growth means a healthy dog – and I agree – but large breed puppies need specific nutrition to help with muscle and bone development. I don’t remember what food we fed her at the time but we now feed her a formula from VeRus. They have a formula specifically for large breed puppies so you might want to check them out. There’s a contact page where you can fill out info on your dog & they’ll get back with you & send samples. Just do a web search for Verus Pet Foods. Good luck!