I'm uncertain of your question. I'm from a long line of midwestern farmers, and when we butcher hogs, we use everything but the squeal, and that's no joke. It's no big deal, and most everyone back home still does it.

As I've been more and more into hunting, most animals are fairly similar in what you can eat and what you can use for non-eating purposes.

Hogs have a nice waterproof sack around the heart that my grandfather used to hold his tobacco. I don't know if other animals have that. Cow tongue and heart is still a delicacy as far as I'm concerned...