The Irish Terrier is one of the oldest terrier breeds, a lean, longer-legged dog that worked Irish farms as a ratter and guard, and later carried messages in World War I. Nicknamed the Daredevil, it has a dense, wiry coat in red or wheaten, small folded ears and a bearded face. Most weigh 24 to 27 pounds and stand 17 to 19 inches tall.
Many Irish Terriers are affectionate, playful and loyal, with a bold streak that can tip into stubbornness. They often challenge other dogs and chase small animals, so socialization and consistent, reward-based training matter. In a city of canyon trails and mild weather, that energy has plenty of outlets. Each dog differs, so look at how a particular dog behaves rather than assuming the breed description fits.