Once upon a time there lived four cows in the forest; they used to graze together in a particular spot every day, they were very united and always stood by each other in times of need.
There was a wicked lion in that forest who wished to kill and eat the cows. One day a lion saw the cows grazing together. Whenever the lion tried to attack any one of the cows, all cows united and fought with the lion. Though the lion was king of forest and stronger than the cows, it could not attack the cows because of their unity. He understood that it was not possible for him to kill any one of them as long as they are united.
A few days passed away, the cow quarrelled between each other and started to leave and graze separately. The lion thought that it is a good time to attack the cows, which were grazing separately then the lion attacked all the cows one by one, one day after the other and ate them, all cows died in the hands of the lion as there was no unity among them.