In the fable "The Lion and the Mouse," a mighty lion spares the life of a tiny mouse after the mouse accidentally disturbs him. The lion, amused by the mouse's small size, decides to let it go instead of eating it. This act of kindness sets the stage for an unexpected friendship. Later, the mouse repays the lion's mercy by helping him escape from a hunter's net. Despite their size difference, the mouse proves that even the smallest creatures can make a big difference. The story teaches the lesson that kindness is valuable and that everyone can help in their own way.