The lion laughed at the thought that the little mouse could be of any use to him. But he was a good-natured lion, and he set the mouse free.

Not long after, the lion was caught in a net. He tugged and pulled with all his might, but the ropes were too strong. Then he roared loudly. The little mouse heard him, and ran to the spot.

"Be still, dear Lion, and I will set you free. I will gnaw the ropes."

With his sharp little teeth, the mouse cut the ropes, and the lion came out of the net.

"You laughed at me once," said the mouse. "You thought I was too little to do you a good turn. But see, you owe your life to a poor little mouse."