When we see people who are having tears on their eyes doesn't always mean sadness on their part.

Sometimes just burst out because of different emotions that come out on people, maybe that's a very natural way of people on how they express there feelings.

To cry is one way to let our feelings out, the sadness within us that needs to get out to lighten our mood.On the other way around we see also tears on people who are very happy and even laughter with tears.

This not only shows on human we may also see animals and other creatures having in tears in their eyes.