Hope I'm remembering this correctly or do a search it's been discussed before....an AKC registeration means every dog in your dog's history is recognized as a true standard of the breed. My understanding is that CKC will register ANY dog as a breed by someone simply presenting a picture that of a dog who APPEARS to be a certain breed...meaning there could be lineage somewhere that was not necessarily a yorkie. If I'm wrong...I'm sure someone will correct me