Standing 28 to 36 centimetres at the withers and weighing 12 to 16 pounds, the Plummer Terrier is a small, compact and sturdy dog with a big head and a well-defined stop. It has a blunt muzzle, a broad nose with open nostrils, powerful cheek and jaw muscles, and a strong powerful neck. Its eyes are dark, oval and set wide apart with an alert and intelligent expression, while its ears are dropped, rounded and neatly pinned to the head.
The Plummer has a short, smooth, tight and waterproof coat that usually comes in brindle, red & white, and tri-coloured. Grooming is very easy since it only needs brushing once or twice a week. During shedding seasons, spring and autumn, it needs to be brushed more frequently to remove dead hair.
As with other types of dogs, other basic dog grooming requirements for Plummer Terriers are cleaning of the ears, brushing of the teeth and trimming of the nails. These, along with checking of the skin for ticks and redness are all necessary to avoid infections, tooth and gum disease and discomfort.