I'll let you in on something not too many people know about me. As a child I used to eat chicken feet so I can genuinely tell you how tasty these bad boys are.
Chicken feet are a great crunchy treat that naturally cleans your dog's teeth by removing plaque and tartar. Not only that they are also known to help with mobility. So if you want to keep your dog sprightly without resorting to costly supplements, chicken feet are a natural and cheap way to ease joint pain.
You can also add it to their dinner but as with all bones and treats, do supervise your dog. Also make sure that any bone you give is size appropriate for your dog's jaw.