The Lion and the Mouse, an Aesop Fable:

One day, a mighty lion, tired from hunting all morning, lay down to take a nap under a large shady tree.The lion accidentally stepped on a trap set by a hunter and a net made of thick ropes captured the lion and pulled him up into a tree.Some mice that lived at the foot of the tree scrambled over the sleeping lion to return to their home.But just as the last mouse was crawling over him, the lion woke up.

The lion laid his big paw on the little mouse, trapping him.He apologized to the lion for disturbing him and begged him to spare his life and let him go. The lion pitied the little mouse.