noun
Tosa fighting dog; Tosa Inu
Refers specifically to the Tosa breed developed for dog fighting; synonymous with 土佐犬.
See also: 土佐犬
土佐闘犬は日本原産の大型犬です。
The Tosa fighting dog is a large breed originating in Japan.
Same breed; 土佐犬 is the more common term, while 土佐闘犬 explicitly emphasizes the fighting-dog aspect.
Compound of 土佐 (Tosa, the old province name) and 闘犬 (fighting dog). The breed was developed in the Tosa region.