Can Animals Predict Earthquakes?

China is a huge country. Days before the earthquake struck Sichuan, thousands of toads roam the streets. Water in a pond inexplicably shrunk. And animals in the zoo behaved abnormally just hours before the quake struck. The Chinese are now wondering if animals can predict earthquakes.

However, when more reports of animals behaving strangely, such as on 24 Dec 2007, that was the day tsunami struck, those people who followed the animals were safe. One does wonder if there is something in the air or ground that warn the animals. Perhaps such signals are easily picked up by animals as they are more attuned?