The Weasel thought a moment, then set it free. A while later, the Bat fell again to the ground, and it was caught by another Weasel. It begged this Weasel not to eat him, either. The Weasel, though, said it did not like mice at all and would eat it. The Bat told the Weasel that it was not a mouse, but a bat. The second Weasel had no good answer, so he let it go.

The Bat knew it is always wise to turn events to your advantage. 

The Lion and the Mouse 
 
A sleeping Lion was woken up by a Mouse running over his face.