Could someone please explain why food that contains grain is considered so unhealthy for dogs? I cannot find any explanation as to why grain is considered bad, other than it reflecting the trend in human diets in the West. Does anyone know what the actual evidence is for grain being bad? This is a serious question... I have a 14 week old labrador puppy from working stock and I need to move him off the breeder's choice of Dr. John's. (He was fed raw alongside it at the breeders, I cannot do that and really want him off it) My previous labs were fed James Wellbeloved as pups, but that was 15 years ago. I would be really grateful to have some answers. Thanks.