Quinn's breeders told all their puppy buyers about what they started the puppies on and why they liked it. We actually ended up feeding a better kibble, but I think it was good that they shared because Royal Canin (what they fed), while not perfect is definitely a step up from grocery store brands. The GSD breeder I've been in touch with for years feeds all her dogs and puppies raw. I'm not positive if she requires it or just strongly strongly recommends it, because I've never asked her outright though. I'm sure she might be open to another diet (ex. I can't feed raw because of ______, so instead I feed a high quality grain free kibble like Orijen), but she definitely pushes raw and it's benefits.