This breed developed in the steep and hilly country of Tsushima in Nagasaki Prefecture where horse breeding was known as early as the 8th century. This medium-sized horse which stands about 12 hands (125 cm) was particularly useful as a packhorse in rough country and was also used for timber haulage. It is said to be a calm and easily handled horse. A picture of the Taishu Horse being ridden by a farm woman often symbolizes its calm disposition. The remaining 79 Taishu horses have become an object of interest for tourists.