标签 狼群

标签: 狼群

狼群如何改变河流

  黄石国家公园内的狼群在上世纪三十年代开始绝迹,令鹿的数量不断增加,几乎吃光公园内的植物。公园遂于一九九五年引入数只狼,牠们透过猎杀,...

動物也講「道義」(圖)

  人們從來都認為只有身為高級靈長類的人類才會擁有道德感和正義心,能夠分辨善惡與對錯,然而科學家通過對動物習性進行長期研究後發現,從...
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