Bolas (from Spanish bola, "ball", also known as boleaoras) are a throwing weapon similar to the surujin made of weights on the ends of interconnected cords, designed to capture animals by entangling their legs. They are most famously used by the South American gauchos, but have been found in excavations of pre-Hispanic settlements, especially in Patagonia, where indigenous peoples used them to catch guanaco and ñandu.