My parents prepare their dogs food. A Lab, 6, and a Chessie, 2. Lab is about 90lbs, Chessie is around 110, both just slightly overweight. They're going for coat and joint care, as they're both physically larger then they should be and are extremely active dogs with lots of time swimming, so skin/coat care is important too. Basically the same bulk of the diets already mentioned, grounded beef or chicken breast, rice, veggies, boiled eggs, sardines and other fish. Cooking foods is more of a convenience thing. Don't always have the time at dinner for raw. That said, they feed as much raw as they can, necks, chicken feet, plus others, seen them gnawing on a big bone often. They supplement, not sure what...