I would think so, even if not currently measurable. Infrasonics which is sound on the other end of the inaudible spectrum is the phenomenon where animals know w

I would think so, even if not currently measurable. Infrasonics which is sound on the other end of the inaudible spectrum is the phenomenon where animals know when an earthquake is coming, or when rats know to leave a sinking ship http://en.wikipedia.org/wiki/Infrasound http://en.wikipedia.org/wiki/Infrasound I'm not an expert in this field though.