If you click on any of these pictures of two dogs "wrestling" there is clearly blood and puncture wounds on the dogs. The Tosa-Inu fight promoters claim the dogs are pulled apart if they injure each other and the fight is stopped, but by then the damage has been done. And if it takes upwards of four men, plus and air hose and burning newspaper to get these dogs to stop "wrestling" that tells me the dogs are as hard to stop once started as pit bulls. In my opinion, Tosa-Inu dog fighting has been candy coated to look like something other than what it really is: more brutal exploitation of animals for human gain.

http://www.shaku1.com/fighting.htm

Notice in some of the photos at the above link, that despite the fact that one dog has taken down the other and has "won" the match, nobody is near the dogs to get them apart. Tosa fight proponents claim that the dogs only "wrestle" long enough to take down the opponent onto the mat, and that's the end of it, but these dogs are clearly fighting beyond the take-down.

Look at the open wound on this dog's neck.