When an earthquake is about to occur, snakes will move out of their nests, even in the cold of winter. If the earthquake is a big one, the snakes will even smash into walls while trying to escape.
This sounds quite labour-intensive since it depends on someone sitting there watching the snakes to see what they do. And how do you tell the difference between a snake that’s leaving its nest because of an earthquake and one that’s just popping out for a snack?
BBC NEWS | World | Asia-Pacific | Snakes in China ‘predict quakes’