Ingredients in dry pet food are cooked twice. First during rendering and again in the extrude. Problems are much more common than with canned or homemade foods. Altered proteins may contribute to food intolerance's, food allergies, and inflammatory bowel disease.

High-heat processing of pet food – especially kibble – creates potent carcinogens like acrylamide and heterocyclic amine. Needless to say, these cancer-causing by-products of processing won’t be listed on any pet foo...