Champion Yakazuna Tosa Inu dog. Champion fighting dogs in Japan can earn for their owners mid six figure incomes. More humane than in America, a bout lasts 30 minutes and the referee will stop the fight before serious injury. Tosa Inus and American pitbulls are the two bravest and best fighting dogs although others will argue for the power and fearlessness of Kangols and Tibetian Mastiffs. Fighting dogs is deplorable and not countenanced by the author of this blog.