
unless fallow antler the bigger flat ones stag bars under any name are probably too hard. If he is raw fed just add carcasses and ribs to his food. weigh out to include in his daily food allowance. For teething some dogs enjoy a raw carrot to chew on .
One disadvantage of minced food is that although bone is usually included in the mince ground up the dog doesn't get the chewing of chunky meats/bones which is good for teeth and muscle development in the jaw. Why not move slowly towards some chunky meat for his meals as wellas the recreational things we have talked about.
btw I am not knocking people who use foods like nutriment. raw imo is best however you choose to do it just pointing out one of the points against purely minced food