According to wiki, you're pretty right. > The sound of running water appears to stimulate dam-building, and the sound of a leak in a dam triggers them to repai

According to wiki, you're pretty right. > The sound of running water appears to stimulate dam-building, and the sound of a leak in a dam triggers them to repair it. [0] [0] https://en.wikipedia.org/wiki/Beaver#Infrastructure https://en.wikipedia.org/wiki/Beaver#Infrastructure