Some cat and dog foods are made from food ingredients, just like what you'd purchase in the grocery. Other cat and dog foods are made from an inferior quality of ingredients known in the pet food industry as feed grade, pet grade, or inedible ingredients.
Feed grade, pet grade or inedible ingredient pet foods are allowed by FDA to be made from (not all inclusive):
Meat sourced from diseased, dead, or dying animals; chemical or pesticide contaminated vegetables, grains, fruits.
Pet food consumers are NOT provided with information on the pet food bag or can disclosing if ingredients are food grade or inedible feed grade/pet grade quality.
Pet food consumers deserve to know what they are buying. FDA should require pet food to disclose quality of ingredients on labels.