Dogs and cats have a shorter digestive system than we do, which means that foods are processed quickly — before harmful bacteria have a chance to multiply and cause problems.
Furthermore, carnivores have a very high level of acidity in their digestive systems. This high acidity, which allows them to process raw meats and bones, is also hostile to bacteria. We’ve all seen dogs eat true garbage (rotten foods, decaying squirrel carcasses, etc.) without any ill effects. Nature did not evolve carnivores to eat a diet that would kill them. When preparing and handling raw food, always wash your hands, utensils and dog and cat bowls after every use with hot, soapy water.