There are some that REALLY represent nothing at all, like the Continental Kennel Club and American Pet Registry, and there are the more well-known ones like the American Kennel Club, Canadian Kennel Club
and United Kennel Club. Now while the
AKC, CKC (CANADIAN Kennel Club, not Continental Kennel Club) and UKC don't mean anything special, at LEAST you are getting the guarantee that the dog is a purebred, meaning both parents were of the same breed.