If you have pets, like cats or dogs, you may be so close to the animals so slowly you almost thought the animal was a "man". That is, you begin to think he can express his feelings in the form of human emotions, like crying, or even laugh.
But it's actually not the case. Crying and laughing are the means used by men to express emotions and no animal can do this. Of course we know that animals can whine and yelp when hurt, but crying involve tears that accompany these emotions, and these animals can not do this.
This does not mean that animals do not have the tear fluid in their eyes. But the liquid used to moisten the cornea. Who can cry is a creature that can think and have a sense of emotion. Even children are just beginning to cry only after they learn to think and feel. A baby cried but no tears.
Crying is a substitute for talking. If we can not say what we feel, we cry. Crying is a reflex that occurs outside of us and it helps us to "remove" what we feel.
Laughter is also a human phenomenon. Some animals may give the impression that they're laughing, but it is not at all like human laughter. The reason is that people are always laughing about something, and this means that a certain mental or emotional processes involved. The animals are not able to do the mental or emotion.
For example, when we laugh at a joke or a scene that is "funny", thoughts or emotions make it look ridiculous. Actually, there are many kinds of laughs and there are many reasons why we laugh. We can laugh at funny things, comedians, or humor, and so on. In fact, we can laugh scornfully.
The psychologists also believe that laughter is a social phenomenon. We laughed when we become part of a group that finds something humorous. Of course animals can not force myself to laugh because one of the reasons for this.
