In China, I saw a cricket fighting match but I am a rather gross spirit who did not appreciate the sport. Wiki says that
the Cricket masters pick the strongest warriors and then train them using mouse whiskers or yard grass to be even more aggressive. To promote prowess and focus, a cricket needs to have sex before combat, and the fighting space must be free of pollutants like perfume, smoke and alcohol fumes. Doping with drugs like Ecstasy is a problem, since a high cricket is a better fighter, plus his opponent will detect chemical enhancement and turn tail.