A yellow dog with a white face and a black tongue does not necessarily mean it is fierce. This kind of dog is usually docile and easy to tame, making it suitable as a family pet or a guide dog. They are highly intelligent, able to learn new commands and tricks quickly, and are extremely loyal, usually protecting their owners from any threats.

Of course, the personality and behavior of each dog will be affected by its growth environment, experience and other factors , so its character cannot be judged entirely based on breed or appearance characteristics.