Once upon a time, a lion was sleeping in the forest. A little mouse began to run up and down on his body. The lion woke up and caught the mouse with his paw. He was about to kill it.
The mouse begged for mercy and said, "Please forgive me. One day I may help you."
The lion laughed at the idea but let the mouse go.
A few days later, the lion was caught in a hunter's net. He roared loudly but could not free himself. Hearing the roar, the mouse came running. It bit the ropes of the net with its sharp teeth. Soon the lion was free.
The lion thanked the mouse and learned that even a small creature can help a big one.
Moral: Kindness is never wasted.