Irish Wolfhounds were bred to hunt wolves and other large game across the Irish landscape. Standing at least 32 inches tall and weighing 120 pounds or more, they are the tallest of all galloping hound breeds, and every inch of that frame was built for a specific job: chasing down and overpowering dangerous prey that smaller dogs simply couldn’t handle.
Hunting Wolves and Giant Elk
The breed’s primary purpose, and the source of its name, was hunting wolves that once roamed Ireland in large numbers. These dogs also pursued Irish elk, a now-extinct species that stood roughly six feet tall at the shoulder. Both targets required a dog with exceptional size, speed, and the physical strength to bring down prey that could easily kill a smaller animal.
Unlike greyhounds, which scoop up small, fast prey from the ground, Irish Wolfhounds were bred to hold or throw their quarry. Their hunting style resembles that of the Scottish Deerhound: chase by sight, close the distance at a sprint, then physically overpower the animal. This distinction shaped their entire body type. Strength and substance mattered more than pure height, because a lean, beanstalk-like dog would be useless against a hungry wolf weighing 55 to 100 pounds. The breed’s wiry, rough coat also served a practical function, offering protection against teeth, claws, and harsh weather during extended hunts.
Guardians and War Dogs
Beyond the hunt, Irish Wolfhounds served as guard dogs and companions to Celtic chieftains. Their imposing size made them natural deterrents, and historical accounts describe them being used in warfare as well. Celtic tribes valued them highly enough that they became symbols of status and power. Gifting an Irish Wolfhound to a foreign leader was considered a significant diplomatic gesture, and the earliest written references to the breed come from Roman accounts noting their arrival as impressive gifts.
Why the Breed Nearly Disappeared
The very success of the Irish Wolfhound created the conditions for its decline. As wolf populations in Ireland shrank over centuries, the dogs’ primary job slowly vanished. Wolves were a constant presence in Ireland through the 1600s, so much so that Oliver Cromwell issued a council order in 1652 forbidding the export of Irish Wolfhounds. The country needed them to deal with its growing wolf problem. But by 1786, the last wolf in Ireland was shot on Mount Leinster in County Carlow, and the breed lost its reason for existing in any working capacity.
Without wolves to hunt, demand for the dogs collapsed. By the mid-1800s, the Irish Wolfhound was nearly extinct.
How Captain Graham Rebuilt the Breed
A Scottish army officer named Captain George Augustus Graham took on the project of reviving the Irish Wolfhound in the second half of the 19th century. He started with the few remaining dogs that carried wolfhound blood and crossbred them strategically with several other large breeds to restore size, bone structure, and type.
Scottish Deerhounds formed the backbone of his program, given their close relation to the original wolfhound. But Deerhounds were lighter and more slender than what Graham needed, so he crossed in Great Danes to add heavy bone and bulk. He also introduced a small amount of Borzoi blood through a dog named Korotai, owned by the Duchess of Newcastle. One particularly influential cross involved a Tibetan Mastiff named Wolf (some historians believe Wolf was actually a Kyi Apso, a smaller, bearded Tibetan breed). Two of Wolf’s daughters, Vandal and Nookoo, appear in the pedigree of every Irish Wolfhound alive today. A well-known Mastiff of the era, Garnier’s Lion, also contributed through offspring he produced with a Scottish Deerhound named Lufra.
The result was a reconstructed breed that matched historical descriptions of the original wolfhound in size and general type, while carrying genetic contributions from at least five distinct breeds.
The Modern Irish Wolfhound
Today’s Irish Wolfhounds no longer hunt wolves, but the breed standard still reflects their original purpose. Males must stand at least 32 inches at the shoulder and weigh a minimum of 120 pounds. Females must reach 30 inches and 105 pounds. These minimums apply only after 18 months of age, and many adults exceed them considerably. The breed is officially described as a rough-coated, greyhound-like dog that combines power and swiftness with keen sight.
That enormous frame comes with significant health trade-offs. The breed has one of the shortest lifespans of any dog, with averages reported between roughly 5 and 9 years depending on the study. The most common health problems are a form of heart disease where the heart muscle weakens and enlarges, bone cancer, bloat (a life-threatening twisting of the stomach), and joint development disorders. A liver condition involving abnormal blood vessel connections also occurs at notable rates.
Despite being bred for centuries as working hunters and guardians, modern Irish Wolfhounds are known for their calm, gentle temperament. They’re typically quiet indoors and friendly with people, a disposition that makes them popular companions even though their original job involved taking down one of the most dangerous predators in Europe.