Goodness, there's probably a million and one advantages in feeding a dog raw. For one their teeth alone would love you. A dog was not meant to chew reallly, and they dont run their tongue through their mouth like us, so tartar deposits is a problem with dry food. But thats nothing compared to the difference in their coat, energy levels, and even age span when they eat raw. The enzymes alone in raw meat is enough to rejuvenate an old dog! And yes preservatives, very bad we know what they do to us!