The border terrier is of medium bone, slightly taller than long. Its long legs impart the speed, agility and endurance necessary to follow a horse over all sorts of terrain, whereas its fairly narrow body allows it to squeeze through narrow passages in pursuit of a fox. Its gait displays good length of stride. Its coat consists of a short, dense undercoat covered by a very wiry, straight, somewhat broken outer coat, which should conform to the body. Its hide is very thick and loose fitting, affording protection from the bites of its quarry. The border is known for its distinctive otter head, and its alert expression matches its alert demeanor.
One of the few terriers bred to run with the pack, the border is one of the most amiable and tractable of the group. It is inquisitive, busy, friendly and biddable. It does like to hunt and can be independent, ingredients that make for a dog that may tend to roam if given the chance. It is generally good with other dogs and cats, but not with rodents. It is very good with children and makes a good companion for people of all ages. It digs, and some bark. Some are talented escape artists.
Temperament: Even Tempered, Alert, Obedient, Fearless, Intelligent, Affectionate