DO ANIMALS SHOW REACTIONS BEFORE AN EARTHQUAKE?

                       Yes. Some animals can feel the vibrations before an earthquake. Some can hear the sound waves. Humans cannot hear such sounds. The Japanese could get a clue about earthquakes from the quick movement of Goldfish in bowls of water. Snakes can also feel seismic waves and then they come out of their holes.

A Goldfish

read more on earthquakes: http://factbank.blogspot.com/2011/09/effect-of-earthquake-on-sky.html
                                        

EFFECT OF EARTHQUAKE ON THE SKY

                             An earthquake is a purely earthly affair and is the manifestation on the ground of the pressure generated within the earth's csrust due to the kind of changes constantly occuring in it. The physical conditions of the atmosphere are not much affected by an earthquake. So, an aeroplane flying over a region, where an earthquake is occuring, will generally not be affected. However, due to sudden movements of the earth's surface, there may be some pressure fluctuations in the air above and the aircraft may have a 'rough ride'.

Effects of Earthquake