Nearly every pet food on the market contains aflatoxins which is basically, mold. Grains such as corn, wheat, and rice, as well as nuts and legumes, are often contaminated with these potential cancer-causing molds.
If you feed kibble, it might be a challenge to avoid Pentobarbital, an animal euthanization agent found in trace amounts in many kibble dog foods. Imagine feeding your dog a small daily dose of Pentobarbital over their lifetime?