You follow the Leprechaun's directions and manage to wind your way through the many narrow passageways of the cave. Finally you see Cerberus. But he's not what you expected him to be!
This creature is a dog with three heads, as the Leprechaun said. However, he is no bigger than a Great Dane! Also, he seems to have a pitiful expression in his eyes.
You think that perhaps Cerberus is not dangerous. On the other hand, appearances can be deceiving. Maybe he is mean and merciless.