By-Products can include heads, feet, beaks, feathers, bone, etc. By definition, by-products do not have to contain any meat whatsoever. Basically, by-products are the left overs of animal carcasses and end up in pet foods. I ask you, is this an ingredient fit for a “Premium” pet food. We think not. By-products also contain protein, but it is highly indigestible. This helps makes up the percentage of protein in the Guaranteed Analysis on your pet food label. But since it is indigestible, what amount of protein is your pet really getting? Shoe leather has protein too, but would we feed it to our pets!