No. 11: Summer 1980
American geophysicists have been slow to take unusual animal behavior prior to earthquakes seriously. Spurred by Chi-nese work, a network of observers has been set up in California in an earthquake-prone area. Most reports of strange animal behavior have been after-the-fact. Furthermore, the "strange behaviors" frequently turn out to be common during quake-free periods, but simply not remarked upon. Nevertheless, geophysicists did observe some clear-cut instances of animals super-sensitivity to quake phenomena.
Studying aftershocks in the Mohave Desert in 1979, Donald Stierman and his colleagues often heard earthquake booms 4-l0 sec after feeling the shock and seeing their portable seismometers record the tremor. Two dogs nearby inevitably responded with a chorus of barking. Sometimes though, the human observers heard and felt nothing when the seismometers and dogs announced another aftershock.
(Kerr, Richard A.; "Quake Prediction by Animals Gaining Respect," Science, 208: 695, 1980.)