Chimpanzees are now known to manipulate over two dozen implements: clubs to beat with, pestles to grind with, fly whisks, grass stalks with which to fish for termites, spongy leaves to soak up water, rocks as nutcrackers.

现在人们知道黑猩猩可以操纵两打工具：用来敲打的棍棒、用来研磨的杵、飞拂、用来捕白蚁的草秆、用来吸水的海绵叶子、用作胡桃夹子的石头。