Harriers go back to about 400 BC when the Greek historian Xenophon described hare (or rabbit) being hunted with hounds that resemble today's Harrier. English hunting records mention packs of Harriers in the thirteenth century. Harriers may have traveled to England with the Normans, whose word "harrier" meant hound. Later Harrier packs became the poor man's alternative to the upper class practice of hunting with packs of foxhounds. From the late eighteenth century, Harrier hunting packs became extremely popular and they are still apart of the sport today.

Harriers, with their friendly, gentle and responsive nature, make charming family companions and good house dogs. Given early socialization, the Harrier adapts well to situations. The Harrier is inclined to roam and must be exercised and given companionship and training. The Harrier should not be left alone for long periods, because it has a hound voice or bay that it will use not only when hunting but also when it becomes frustrated or lonely.

A most normal dog, the breed is quite healthy although dental irregularities and knuckling over in the front legs is occasionally noticed. Its coat is sleek and easily kept clean. The Harrier should be bathed as necessary, its nails filed weekly and its teeth checked regularly.

The Harrier has a typical hound outline, mid-size between the Beagle and the English Foxhound. Male Harriers are 19-20 inches and 48-50 cm tall. Females are slightly smaller. Both have a typical hound head, with dropped ears and a gentle expression in their dark eyes. It has a medium length neck, a good shoulder, hard topline and a gaily carrier tail. Its chest should be deep and quite broad and its legs very strong with good bone and superb feet. It may be hound in color and its coat should be hard, dense and glossy.