The reason why dogs cannot have white faces is based on people’s expectations of dogs and the purpose of raising dogs. When most people raise a dog, they hope that the dog will be loyal, obedient, and easy to train. And if a dog acts too cunning or doesn't obey its owner's instructions, it's hard to make an ideal pet or family member. Therefore, it is generally believed that if a dog has "white face" characteristics, it is not suitable to be kept in the home.

Of course, this statement is not absolute. Every dog ​​has unique personality and behavioral traits that are not solely determined by its breed or color. Therefore, even if a dog has "white face" characteristics, it does not mean that it is not suitable to be kept at home. In fact, some "white-faced" dogs can also be very loyal, obedient, and become good friends with their owners.