Dogs recognize and love cheerful human faces, to the conclusion that a person is a happy dog will come even with short eye contact. Dogs have these powerful weapons unlike us humans, and it will be easy to tell if someone is happy, sad or angry, scientists have come to this conclusion and published their research in the journal Current Biology.
They came to this extraordinary conclusion by investigating a group of eleven dogs, the examination was conducted on the basis of photos of happy and angry facial expressions, touching the muzzle of a happy person’s figure, they concluded that this happens more often than might be expected in the case of random selection.
The study showed that dogs can relay what they learned while training with new faces at the testing stage. They ruled out the possibility of dogs simply eliminating images based on data such as white teeth that indicate a smile or vice versa, when they do not see their teeth, what scientists have stated is that the entire spectrum of canine observations is based on human eye observation and they make judgment about one’s emotional state.
Since dogs have come to recognize human emotions only on the information they read from the eyes and muscles of the face around the eyes that tell us as well whether humans are happy, the first and basic assumption is that since dogs spend their whole lives with humans , they manage to learn and memorize different facial expressions with their owners, and on that basis they can read the emotional state of other persons, the truth is that dogs cannot be deceived by false facial expressions, as people cheat one another, dogs notice even the smallest deviations from the established rules .