The Tosa, also known as the Tosa Inu, is a breed of domestic dog that originated in Japan. The dog was developed in the late nineteenth century when various types of European breed like the mastiff, Old English bulldog, and the German pointer were crossed with the Shikoku-Inu breed from Japan. This large breed was very popular as a fighting dog between the years of 1924 to 1933, when there were over five thousand registered Tosa breeders.

The Tosa can vary in size depending upon the area in which it was bred, with Japanese individuals reaching a weight between 80 and 135 pounds, while dogs bred outside Japan reach a weight between 30 and 200 pounds. The short coat of this breed is coarse in texture and is typically red, fawn, or brindle in color, but dogs with black coats have been recorded. The Tosa is considered a dangerous dog in many areas and is highly regulated in the United Kingdom. It is banned in areas including Australia, Norway, Iceland, and New Zealand. The Tosa is recognized by large organizations including the FCI and the UKC.

Image Caption: Tosa. Credit: Ludivine HOUDAS/Wikipedia (CC BY-SA 3.0)