Although chicken bones can be dangerous for dogs chicken feet make a great snack.
Like all animal bones chicken bones become hard and can kill your dog if ingested if you cook boil or fry them.
Chicken feet should be safe for dogs to consume as long as they are air-dried. In addition chicken feet are very nutritious.
It might also be possible to enjoy raw pigs feet as a snack. In addition to providing entertainment they also provide nutrition.