Great Dane vs Irish Wolfhound: two of the tallest dogs, two different builds

The Great Dane stands 71 to 86 cm (28 to 34 in) and weighs 50 to 79 kg (110 to 175 lb), with a short, glossy coat and a sturdy, mastiff-influenced frame built to catch and hold game historically. The Irish Wolfhound is taller still at the minimum, with males required to stand at least 79 cm (31 in) and often reaching 90 cm (35 in), but lighter for its height at 54 to 70 kg (119 to 154 lb), with a rough, wiry coat and the lean, leggy build of a true sighthound.

The practical difference shows up in silhouette: the Dane looks powerful and substantial even standing still, while the Wolfhound looks built for a full sprint even at rest, a legacy of hunting wolves and deer across open ground rather than guarding a boar at close quarters.

Both breeds are famously gentle and friendly, described in almost identical terms by their owners: dignified, calm indoors and eager to lean against a trusted person. The Great Dane is affectionate with visitors and content in most households, while the Irish Wolfhound is, if anything, even less suspicious of strangers, having been bred to hunt game rather than guard property, which makes it a genuinely poor watchdog despite its imposing size.

Both breeds are patient with children and other dogs, and neither shows the guarding instinct seen in mastiff-type breeds, so anyone wanting a large dog specifically for protection should look elsewhere entirely. What both offer instead is calm, undemanding company from a dog that happens to be enormous.

The Great Dane needs 45 to 75 minutes of daily activity, mostly steady walking with some off-lead time, and does not require sustained running. The Irish Wolfhound needs a similar 60 minutes but specifically benefits from regular chances to gallop flat out in a securely fenced area, since its sighthound instincts mean recall is never fully reliable once a squirrel, deer or cat crosses its path.

Both breeds are sprinters rather than endurance athletes and can be injured by too much repetitive exercise, particularly during the long growth period both share. Off-lead freedom for either dog belongs in enclosed spaces only, given how quickly either can build speed and how far behind an owner is left standing.

The Great Dane's short coat is genuinely easy, needing only a weekly brush with a rubber mitt and an occasional bath, with shedding that is moderate but steady. The Irish Wolfhound's rough, wiry coat needs slightly more attention, brushed once or twice a week with a pin brush and comb, including regular attention to the beard and leg furnishings, though it is still far less demanding than a long, silky coat.

Both breeds drool to some extent, the Dane more so on average, and both benefit from a towel kept near the water bowl as a standard piece of household equipment. Nail care also matters more than usual for both breeds, since a heavy dog standing on overgrown nails changes how it carries its whole body.

Both breeds share a strikingly short lifespan even by giant-breed standards. The Great Dane typically lives 7 to 10 years, while the Irish Wolfhound often lives only 6 to 8 years, among the shortest of any recognized breed. Both are strongly predisposed to dilated cardiomyopathy and bloat, and both benefit from regular cardiac screening, often yearly with ultrasound or ECG, throughout adult life.

The Irish Wolfhound additionally carries a notable risk of bone cancer and, in puppies, liver shunts, for which some breeders screen at around eight weeks old. Choosing a breeder who actively screens hearts, tracks the ages of older relatives and can speak openly about longevity in their lines matters enormously for either breed, since a short average lifespan makes every extra healthy year genuinely count.