Why the breed exists
The Glen comes from one Irish valley, and it is built like nothing else in the group: long and low, with heavy bone, a bowed front and powerful hindquarters — a dog meant to work underground and to do heavy farm jobs above it, including, historically, turning a spit. It is also notably quieter at work than most terriers, which is a working trait rather than a temperament quirk: a dog that works close to its quarry in a tight space has no use for noise. The standard asks for a tail "docked to approximately half-length… long enough to allow a good handhold" — a working detail on a dog built to go to ground — and then, in the next line, "Dogs with undocked tails not to be penalized." The breed's own written standard makes room for both.
The Glen is one of the handful of breeds the American Kennel Club itself names as perilously low in number. It received full recognition from the Irish Kennel Club in 1934 and from the AKC in 2004, and the Royal Kennel Club currently lists it as a vulnerable native breed on 61 registrations in 2025 (UK data, as of 2025). Please read that as a reason to pay attention rather than a reason to shop. Learn the breed, follow the Glen of Imaal Terrier Club of America, support the health work, and tell the story accurately. A breed this small is harmed by a wave of demand, not helped by one.
The official written standard belongs to the breed's parent club.Read the official Glen of Imaal Terrier standard →
Choosing a Glen of Imaal Terrier on purpose
Every breed has its own list of required health screenings, kept by its parent club and published through OFA. A preservation breeder working in this breed tests to that list and shows you the results — including the ones that didn't go their way.
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