rubber medicine ball. Horseball is a game played on horseback where a ball is handled and points are scored by shooting it through a high net. The sport is a combination of polo, rugby, and basketball. Pato was played in Argentina for centuries, but is very different from modern polo. No mallets are used, and it is not played on grass. Polocrosse is a combination of polo and lacrosse and is also played on horseback. It was developed in Australia in the late 1930s. Played on vehicles or other animals Polo is not played exclusively on horseback. Such polo variants are mostly played for recreational or tourism purposes. Non-equine variations include: On other animals Camel polo is played in Mongolia Elephant polo is played in South Asia. Yak polo is played in Mongolia and western China. On vehicles Auto polo was a motorsport invented in the United States in the early 1900s. Its rules and equipment were similar to polo but automobiles were used instead of horses. Canoe polo is played around the world in kayaks and governed by the International Canoe Federation. Cycle polo is a similar game played on bicycles instead of horses. A variant of cycle polo is also played on penny-farthings. Golfcart polo Motoball (motorcycle polo) was invented in the United States. Segway polo originated in the United States. A lighthearted variant, hobby horse polo (), was devised in 1998 in south western Germany. The Polo-Club in Mannheim was founded in 2002 to organise matches and promote the game. Since then, the variant has gained further interest in other German cities. It is played on hobby horses, the toy, instead of polo ponies. While following standard polo rules in part, it has some more unusual rules: Goals, for example, are the height and width of bar stools; and any departure from accepted gameplay standards will attract "penalty sherries" to be consumed by the offending player. See also Dakyu Commercial animal cloning List of polo players Polo handicap PIPA Polo Instructors and Players Association U.S. Open Polo Championship Notes References Further reading Former Summer Olympic sports Mixed-sex sports