I added lately more and more of chicken necks to our Papillons menu. They really work well, as even the few older dogs which have lost some of their teeth can eat them, by me cutting them up into small chunky pieces. They are easy to cut up with meat shears, or poultry shears.
Occasionally I give them turkey neck chunks of about 4" long. Not all, but most of our dogs will eat them. It takes a while, and brings them great satisfaction.