---

Dogs know how to smile, but not in the usual sense for people. The facial muscles on the dog’s faces are much less than those on the person’s face. The dog can undoubtedly experience a pleasant feeling of joy, like what we experience smiling, but the dog cannot express this feeling as we do. In dogs, not only the muzzle, but the whole body is used to express emotions.
When the dog is in a state of pleasure, it relaxes the jaw, which makes the mouth open. The look is very soft, friendly, and eyes can narrow. The dog can slightly pull the ears back. The dog’s position at this moment can be any, but the whole body expresses relaxation. And the most crucial detail of a dog’s smile is a slight tail wag—the more intense the wobble, the more full the smile of the dog.