The Yorkshire Terrier seems oblivious of its small size, ever eager for adventure and trouble. It is busy, inquisitive, bold, stubborn, and can be aggressive to strange dogs and small animals, in other words, it is true to its terrier heritage. The Yorkshire Terrier tends to exercise itself within the home, but they do appreciate a short walk outside. They are very intelligent, are easily taught and love to interact with their owners by playing games.