These scruffy-looking dogs may be one of the biggest breeds in the world, but don't let their appearance intimidate you! Despite their beginnings as a war dog for the Celts, modern Wolfhounds are as tall as
Irish wolfhounds The Irish Wolfhound is a breed of domestic dog, specifically a sighthound. The name originates from its purpose (wolf hunting with dogs) rather than from its appearance. Irish Wolfhounds are the tallest of dog breeds.