Cancer causing dog food brands In 2014, some testing of dry pet food revealed dangerous facts about the food your dog or cat may be eating. The Consumer Council of Hong Kong published the results of testing performed on nearly 40 popular pet foods. The results were a shock to many pet owners. Three popular US food manufacturers, Purina, Hill’s and AvoDerm, all had foods that were found to contain cancer causing aflatoxins (aflatoxin B1). (The Hill’s food tested was cat food.) Aflatoxin poisoning in dogs is a serious risk, so you need to know more about aflatoxins in dog food. How Do Aflatoxins Get In Dog Food? Grains such as corn, wheat, and rice, as well as nuts and legumes, are often contaminated with molds. This may be due to poor growing conditions and substandard or extended storage. Molds called aflatoxins can easily grow from the mold Aspergillus flavus … and these produce a very potent carcinogen. Aflatoxins are very stable and even the high tempera...