A
 Biology teacher was teaching his students how a caterpillar turns into a
 butterfly. He told the students that in the next couple of hours, the 
butterfly would struggle to come out of the cocoon, but no one should 
help the butterfly. Then he left. 
      The
 students were waiting and it happened. The butterfly struggled to get 
out of the cocoon and against the advice of the teacher. One of the 
students took pity on it and decided to help the butterfly out of the 
cocoon. He broke the cocoon to help the butterfly so it didn't have to 
struggle anymore. But shortly afterwards, the butterfly died.
 

