I always feed my dogs (and ferrets, snakes and lizards) a natural diet. I'm sure this came up in another thread recently? LOL
Anyroad, they get fresh whole fish (sardines, mackerel etc) with guts and all, rabbits, squirrels, feather, stillborn lambs/pigs/calves, raw meaty bones like chicken wings, necks, whole chickens (three large oven ready hens with giblets for a fiver), rib racks with meat... and so on and so forth. They really like pigs' feet (including trotters and skin) and pig skin too.
My local butcher gives me a bin bag full of chicken frames (with meat and organs), rib ra