because in return for kindness you need to help others to help you back
This act demonstrated kindness and mercy, showing that even the strongest can show compassion. It also highlights the idea that small acts of kindness can lead to unexpected rewards; later, the mouse returned to help the lion in a time of need. This story emphasizes the importance of helping others, regardless of their size or status, and reminds us that we never know when we might need help in return.