Puppies need calcium and phosphorus to grow strong bones and good joints. As they get older, they need chondroitin and glucosamine for joint support and help to rebuild cartilage. Made in the USA, our freeze-dried chicken necks are the best, most natural way to provide this support for your dog. This process merely removes all the moister but leaves all the healthy benefits. Chicken necks are like potato chips for dogs - they can't eat just one!