3. Dogs smile in order to get affection from their owners.
Just like human babies, dogs are capable of mimicking emotions. Studies show that when it comes to dogs, smile is an appeasement gesture that indicates submission or nervousness. In other words, it means “I’m not a threat. I won’t challenge you. I like you”. The behavioral study also shows that dogs mirror our emotions because we actually train them to do so. According to Steven Budiansky, author of The Truth About Dogs, they have adopted a survival-of-the-friendliest strategy by learning our language and gaining access to our hearts.