Dogs are relatives of the wolf and originally ate raw foods. Nowadays it is common for owners to feed commercially made cooked (kibble) foods. Cooking is supposed to destroy harmful bacteria and parasites and to insure adequate shelf life of the food. But, cooking also removes some of the nutrients that our pets need. And, after the problem with the Chinese tainted gluten in US foods, we can't really say that kibble is "safer" than feeding raw.
Raw feeders often say that they feed "BARF" - bones and raw food. Feeding BARF is not the same as merely throwing a bunch of raw meat at the dogs. BARF diets include raw meat, vegetables and supplements but does not include grains or other carbohydrates. BARF includes meats from different animals - beef, pork, chicken and turkey are often available without too much searching. You can also incorporate fish and other animals. Organ meat, particularly liver should be 5 to 10% of the diet.
Here in Phoenix, there is a yahoo group called PhxBARF that discusses feeding raw. And, there is a Phoenix-area BARF food-buying co-op, visit http://www.azrawbones.com/ Various raw foods can be purchased in Surprize, AZ from Susie's Doggy Delights http://www.suzysdoggiedelights.us/