Shiba Inus looking cute in Red for valentine's Day! The Shiba Inu (柴犬) is the smallest of the six original and distinct breeds of dog from Japan. A small, agile dog that copes very well with mountainous terrain, the Shiba Inu was originally bred for hunting. It is similar in appearance to the Akita, though much smaller in stature. It is one of the few ancient dog breeds still in existence in the world today.