This dog might be quite noisy; it will usually bark at strangers or at any other sound they hear on their property. Although a Japanese Spitz is a small puppy, it makes an excellent watchdog who loves to protect its family. Having a watchdog sounds great, but excessive barking might get to be quite annoying.  This is why it is essential to train and socialize this puppy from a young age. Otherwise, you might end up with a loud barker who won’t let you, nor your neighbors, ever get a good-night sleep!