A little mouse met a lion who wanted to eat him. The mouse pleaded for his life by saying that one day the lion might need his help. The lion took pity on the mouse and let him go. Later, the lion got trapped in a net and cried for help. The mouse heard the roar and went to help by nibbling through the ropes of the net with his small teeth, freeing the lion. From then on, the mouse and lion were forever friends.