A smile is a facial expression formed by flexing the muscles near both ends of the mouth. The smile can also be found around the eyes. Among humans, it is an expression denoting pleasure, joy, happiness, or amusement. Smiling is something that is understood by everyone despite culture, race, or religion; it is internationally known.
Cross-cultural studies have shown that smiling is a means of communicating emotions throughout the world. We can see smile from animals too. Here we have collected 30 Smiling Dogs Put a Smile on Your Face. I am sure they can put a smile on your face too!