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美洲松鼠虽小,却可以集体向天敌进攻。进攻的号令就是“尾巴语言”。尾巴挥3下,表示进攻开始;挥2下,表示继续进攻;挥1下,表示停止进攻。
American squirrels are small, but they can collectively attack natural enemies. Offensive order is “tail language.” Tail swinging 3, said the attack began; swing 2, said to continue the attack; swing 1, said to stop the attack.