Tosa (dog)

The Tosa (土佐, also called the Tosa Inu, Tosa-Ken or Japanese Mastiff) is a breed of dog of Japanese origin that is considered rare. It was originally bred in Tosa, Shikoku (present day Kōchi) as a fighting dog and is the only breed still used (legally) in Japanese dog fighting.[1] Ownership is restricted in some countries as a dangerous breed.