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Yellowstone Is Among the World's Best Places to See Wild Wolves. Here's the Story of the Animal Called Both 'Public Enemy' and Cultural Icon
一个世纪前,公园里的狼被消灭了。 1995 年,生物学家将它们带回来,标志着顶级食肉动物的历史性重新引入
Scientists Thought Ravens Followed Wolves for Food. They Were Wrong. Ravens Predict Them
新的 GPS 跟踪表明乌鸦利用狼杀死的心理地图来导航黄石公园。