Japanese dog breeds are a diverse group of breeds that are native to Japan. They range in size from small, such as the Shiba Inu, to medium-sized, such as the Akita, to large, such as the Kai Ken. These breeds are known for their loyalty, intelligence, and devotion to their owners. They are friendly and energetic, and many are excellent watchdogs. Japanese dog breeds are also known for their thick coats, which help to protect them from the cold Japanese winters.