In temperament the Kishu Ken is dignified, loyal and alert, generally calm at home and reserved with strangers. It tends to attach itself closely to one person or household, and its strong hunting instinct can make it intolerant of small animals and of other dogs.
It is a well-muscled, sturdily built spitz with a broad forehead, small triangular eyes, small pricked ears that tilt slightly forward, and a thick tail carried curled or in a sickle over the back. Its double coat has a harsh, straight outer layer over a soft, dense undercoat.
The Kishu Ken takes its name from the old province of Kishu on the Kii Peninsula, where its local strains were long known by the names of individual local districts, such as Kumano and Taichi, before a single breed name was settled. After the breed was designated a natural monument, Japanese breeders concentrated on solid-coloured dogs, and white came to dominate the breed over the twentieth century while red and sesame became uncommon. It remains rare outside its homeland. The breed was developed to work alongside hunters in steep, wooded country, tracking wild boar and deer and holding the quarry at bay until the hunter arrived.