蛇的腿可能打扰了它的某些活动，比如，掘穴，逐渐就表现的没有用处了。
Legs on snakes likely disturbed some form of movement, such as burrowing, rendering the legs useless.
只有水生生物和在地下掘穴而居的动物成为极少的幸存者，比如海龟、小型哺乳动物和鳄鱼等。
Among the few survivors would have been animals living in water or burrowed in the ground like turtles, small mammals and crocodiles.
但是，格兰特博士说，这是有关“地震前线索”的第一个令人信服的可能机制，水生的、半水生的以及掘穴的动物可能能感觉到这样的线索并且作出反应。
But, Dr Grant says this is the first convincing possible mechanism for a "pre-earthquake cue" that aquatic, semi-aquatic and burrowing animals might be able to sense and respond to.
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