The Wolf And The Lamb (Very Short Story)

A hungry wolf was once drinking water at a stream. He caught sight of a lamb drinking water far down. He wanted to eat it up. He ran up to it and said very angrily, "Why are you making the water muddy? Don't you see that I am drinking it?" did you see that there is one more wolf in the stream. The wolf angrily jumped into and died 

Use your brain without doing anything - moral