What does it mean to meet a hedgehog?

In geomantic omen, hedgehog is called one of the Eight Immortals. In some areas, it is also called the mascot, which has the function of making money. In Hebei province, dough is kneaded into the shape of a hedgehog in spring and placed on the door shaft, symbolizing the way to make money. In addition, hedgehogs can predict natural disasters.