What message about human achievement is conveyed by the success of the Muskrat after the other creatures could not accomplish the same task?

The message the Muskrat leaves us is that it doesn't really matter the physical size, but the passion and determination. The Muskrat was the smallest animal of all and was the one that accomplished the task; sometimes we think that the one who is physically stronger is also mentally strong, but that sometimes isn't true. The action of the Muskrat must be a lesson to all of us who think that strong people are the ones who go to the gym, but many times the strongest ones are the ones who have determination and passion, and most important believe in themeselves.