With few exceptions, commercially made dry food is primarily cereal based with the major portion of the protein coming from grains and a dash of animal protein in the ingredients. An amazing number of dogs have been able to exist and adapt to these diets, which have made the dog into a partial herbivore instead of a carnivore. Canned diets, which usually contain more animal protein with a dash of cereal, are also popular, especially among toy breeds. Some people successfully combine these two.