Green Tripe's Green Tripe with Trachea & Gullet contains organic Green Tripe and Trachea/Gullet
"Bovine trachea and gullet are the natural sources for chondroitin sulfate. Bovine tracheal cartilage has also shown success in helping to isolate cancers, tumors, and other diseases by preventing their growth and spread. The fresh raw trachea and gullet are ground in with the tripe. This is an excellent product for all dogs, especially breeds known for hip/joint problems."
This product should be fed as part of the 80% meat portion.