Cow brains. Sheep guts. Chicken heads. Road kill. Rancid grain. These are a few of the so-called nutritionally balanced ingredients found in the commercial pet food served to companion animals every day.

More than 95 percent of US companion animals derive their nutritional needs from a single source: processed pet food. When people think of pet food, many envision whole chickens, choice cuts of beef, fresh grains, and all the nutrition that a dog or cat may ever need — images that pet food manufacturers promote in their advertisements. What these companies do not reveal is that instead of whole chickens they have substituted chicken heads, feet, and intestines. Those choice cuts of beef are really cow brains, tongues, esophagi, fetal tissue dangerously high in hormones, and possibly diseased and even cancerous meat.