世界“最丑”动物大盘点 长鼻猴排名第一(图)(12)
2009-08-03 09:02:40
北京晚报
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独角鲸
问:这种非同寻常的长牙怎样为鲸所用?
答:在动物界通常的情况是,雄性具有浓密的鬃毛、巨大的鹿角或者是长牙来显示尊贵。长牙就如同一个一米长的天线--它可以让独角鲸测量温度、压力和水的含盐量。
长牙还是一种有效的武器。独角鲸可以使它的长牙刺穿其他鱼类,在冬天可以冲破冰层来获得空气。
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