If it helps, the only raw meat my wolfhounds get is what they catch themselves; muntjac deer. But they are careful to eat the offal first, not the 'raw meat' which is muscle. That is because they instinctively know that the liver and lights have more benefit, in the form of various useful trace elements and other good things, than muscle alone. Even the stomach of a deer gives them some vitamin C, since the animal lives on plants. So that suggests that the ideal diet has other than the 'raw meat', though plainly bone marrow, which may go with it, helps.