One of the many situations where Bilbo acted as a lionhearted leader was when giant spiders had besieged them while the dwarves were going through the forest. After Bilbo slayed the immense spider that attacked him he realized that more spiders had wrapped up the dwarves in their cobwebs which caused to muster up his courage. He put on the invisible ring and started pelting rocks at the spiders. He drove the spiders away by singing causing them to follow his voice and leading them further and further away from the dwarves. While the spiders were trying to track down the voice, Bilbo freed the dwarves and saved them from their impending doom. He showed audacity when facing the spiders when he could have easily left them there to fend from themselves