[SandyandMila]

RMB stands for raw meaty bones. From http://www.dogsnaturallymagazine.com/raw-feeding-primer/ “This can include chicken backs, wings and necks (or even whole carcasses), lamb necks, pork necks, turkey necks, ox tails, beef ribs, turkey tails; any meaty bone that can be completely consumed by your dog. If you are feeding meatier meals (turkey or lamb necks), feed about 50% RMB, if your choices are bonier (chicken backs, pork necks, wings or ribs), feed about 30% RMB.
Large, weight bearing bones such as marrow and knuckle bones are not considered RMB’s if the dog is not able to consume the bone. These can be given as a recreational bone..” I can find at my local supermarket chicken wings, leg quarters, turkey necks, beef oxtail, pork neck bones, whole chicken, whole turkey, whole quail. Others you could find at at a local butcher or wholesale supplier and also online at sites like Hares Today, My Pet Carnivore, and if you have Primal pet food at a local pet store they also have chicken necks, chicken backs, and turkey necks. That site is a good reference and there are so many more knowledgable people on DFA that can help you. Feel free if you have any more questions!