List of dog fighting breeds states:
Dog Fighting Breeds is a list of dog breeds originally developed for, or commonly used at some time in their history for dog fighting.

Indeed, this dog was used for dog fighting at one point in it's history.  In contemporary times, Western culture only use PitBulls and Tosas.  In the Middle East Gull Terr, Gull Dong and Bully Kutta's are used. Please stop following me around, it's strange...