The Plummer Terrier is a very attractive smooth-coated dog with a fiery red and white coat and head, a white collar at the neckline, or a full cape. The ears fold over like most terriers, and the nose and eye are typically black, and the jaw has a good scissors bite.

A generally game working dog, the Plummer Terrier is not a Kennel Club breed, and most Plummer Terrier owners who work their dogs would prefer that this dog was not part of the Kennel Club. The Plummer Terrier appears to be a breed that has caught on in popularity among a segment of the working terrier set, and with increased restrictions on fox hunting in the UK, its popularity as a ratting dog is likely to increase.