Anco Bully Tubes are a great treat to provide your dog with some well-deserved chewing fun. They are naturally rich in chondroitin and collagen which are essential for joint health - great at keeping joint pain at bay and supporting mobility. Easily digestible so they're good for those with digestive issues/sensitive tummies. Anco Bully Tubes are also full of protein, which is critical for the building and maintaining of muscles.