We feed our big poochy some unusual things. She decided if it’s worth it. We kept scraps from the deer and elk we hunted last fall. Some of it kept in the freezer and some was preserved in our cheap-as-crazy outdoor freezer (compliments of our northern winter: any box on the porch).
The last piece to give her is a piece of an udder that I’d cut into small pieces. I don’t think it would be humanly edible because the texture was tough and the knife was too lazy about getting though it. Mind you starving people have boiled their leather boots in the past. Never say never.