食物供给不足 东北虎自相残杀咬死同类
沈阳冰川动物园东北虎之间发生近年来罕见的自相残杀现象，三只成年东北虎咬死了另一只成年东北虎，专家分析，很可能是入冬以来食物供给不足造成的。
Tiger-eat-tiger life in a zoo
Three Siberian Tiger killed one of their adult congeners in Glacier Z.G., in Chenyang, Northeast of China. Some experts commented such a tragedy literally rarely happened. The most possible explanation was the shortage of food in such a winter season.
