[LAblondeGPhi]

Originally Posted by DrPhil

Animals tend to act strange before an earthquake and other things that they sense or feel before humans.

Example:
http://www.youtube.com/watch?v=1MFzcl-kZHo

I always thought it had something to do with animals being able to hear earthquakes before we can feel them. There are three different kinds of energy waves associated with earthquakes, and the first/fastest one (p wave) travels similarly to sonic waves, so I just assumed that there was some kind of noise associated that's outside our hearing range. I think the second and third type are what cause most of the actual shaking.