Most ingredients are completely inappropriate for cats and dogs and barely digestible. Corn, soy, wheat gluten and corn syrup are often included in pet foods. Real meat is not even required to put the words beef or chicken on the label.
The word “natural” can be used on packaging even if it has been rendered through chemical processes that are not at all natural and food can be labeled "organic" with only 3% of the ingredients being organic.
These are some of the many reasons we started making our own pet food several years ago. We control exactly what goes into their food, we know it's all human grade and we know how it's made.