Tosa (Dog) https://en.wikipedia.org/wiki/Tosa_(dog) https://ngdc.cncb.ac.cn/idog/breed/getBreedDetail.action?breedId=246 https://www.akc.org/dog-breeds/tosa/ https://www.fci.be/en/nomenclature/TOSA-260.html https://www.ukcdogs.com/tosa-ken Japanese Tosa Tosa Ken Japanese Fighting Dog VBO:0201357 Tosa Fighting Dog FCI:260 iDog:246 Tosa Tosa Inu Tosa Tōken Japanese Mastiff fully recognized breed not recognized breed Dog breed Sabrina Toro