I think i know what you mean there but imo the pup will come to no harm without food for 24hr's if need be..i am sure it will eat sooner than that..my main meaning is if you give in to a pup by feeding nice juicy food you will make a rod for your own back..
As for natural diet's to me it can not be duplicated in a domestic breed enviroment.. as we never know how much of each mineral every single dog need's..all there need's are different the same as us human's..i would rather give them everything a dog need's in a complete meal rather than guessing with a barf diet..if fed on complete they ca