Lion and the two cows

Once upon a time, there were two cows red and yellows living in peace in forest. They had an agreement to share the food, defend each other and to stand together as one cow in front of any danger. In the other side of the forest, there was a lion which was planning to eat these cows but it couldn't. Because it is impossible to fight all of them at once. So, the lion went to the cows and has pretended to be kind and nice with them until he became a friend. After that, the lion start to convince the red cow how difficult is to share the food and how the yellow cow is is working less and eating more. After that, the red cow has agreed to kill the yellow cow and share its meat with the lion. Once the lion killed the yellow cow, it faced the red cow and say to it "it is your turn now I will kill now". The red cow has cried and said I have killed when I broke the agreement.

In conclusion, we should keep our promises and never trust strangers.