Non-Sporting Group
Dogs that are suited for specific work and others that are not related to dogs of other groups in appearance or lineage are classified in the non-sporting group.
Some are suitable for circus acts, as they have an attractive appearance and an excellent understanding and memory.
Others are better rat catchers than terriers are, or are excellent guard dogs as they don't bark unnecessarily. It almost seems wrong to call them "non-sporting," as they are all, without exception, wonderful dogs.