This is what I made for the kids today! It's stinky and they love it... Dehydrated beef lungs...Not quite raw, but natural and preservative free etc, and not cooked to death...
It's really easy to make by the way. Just cut the lungs into pieces about 1/2 inch thick.
Place on baking tray and put in oven at about 100 degrees C.
Keep the oven door slightly open and bake for about an hour or two until it's all dry.
Your dogs will love this!