Irish Terrier is one of the oldest terrier breeds. They are usually called the daredevil of Dogdom because they are independent, playful, assertive, bold, and intensive. They are always ready for an action or an adventure. Irish Terrier tends to be aggressive with other dogs and animals and reserved with strangers. With early socialization and training, they can become really good with young children. This breed has a medium energy level. They love to run, to chase, and to explore; they require daily physical and mental exercises. The average weight of an Irish Terrier is 25 to 27 pounds, and its size is about 18 inches.