rockhillmanor wrote:
Grain Free dog food has much higher protein and higher fat content.
Not all of them. Not by a long shot. A lot of them replace grains with potatoes (white or sweet), tapioca, quinoa, etc. Those foods don't necessarily have more fat or protein than foods that contain grains.
Purina Farms and Hill's are the ONLY pet food company's that have their own extensive research labs for their food. And Hill's having the most extensive labs of the two. The other brands do not.
I suspect Royal Canin would disagree strongly with that statement. ;)