Tōgyū (闘牛) also known as ushi-zumo or Bull sumo, is a spectator sport native to the Ryukyu Islands of Japan (Okinawa Prefecture and the Amami Islands of Kagoshima Prefecture). It is also held in other regions of Japan, such as Iwate Prefecture, Niigata Prefecture, Shimane Prefecture, and Ehime Prefecture. Although sometimes known to Westerners as "Okinawan bullfighting", it is drastically different from the Spanish or Portuguese style of bullfighting where the matches are between a bull and a human, with blood being spilt. Tōgyū has more in common with northern Portugal's sport of chegas and the Swiss sport of cow fighting.