Scientists have observed this phenomenon in very different animal species from wild sheep to woodrats.

从野生绵羊到林鼠，科学家们观察到许多种动物有这种现象。

JOHN MEGAHAN: Wild sheep, goats and buffalo.

约翰·梅加汉：野绵羊、山羊和水牛。

They saw wild sheep with curly horns five feet long.

他们看到野羊长着五英尺长的卷曲角。

Even the wild sheep, the best mountaineers of all, choose regular passes in making journeys across the summits.

即使是最优秀的登山家野羊， 在穿越山峰时也会选择固定的山口。

All kinds of wild sheep are mountain animals, and their descendants' dread of water is not easily accounted for.

各种野羊都是山兽，它们的后代怕水，就不好解释了。

The Modoc and Pah Ute Indians are, or rather have been, the most successful hunters of the wild sheep in the regions that have come under my own observation.

Modoc 和 Pah Ute 印第安人是，或者更确切地说，曾经是我自己观察过的地区最成功的野羊猎人。

And Lewis and Clark tell us that, in a time of great scarcity on the head waters of the Missouri, they saw plenty of wild sheep, but they were " too shy to be shot" .

刘易斯和克拉克告诉我们， 在密苏里河源头水资源极度匮乏的时候， 他们看到了很多野羊， 但它们“太害羞了， 不敢被射杀” 。

The more rugged and inaccessible the general character of the topography of any particular region, the more surely will the trails of white men, Indians, bears, wild sheep, etc., be found converging into the best passes.

任何特定地区的地形的一般特征越是崎岖和难以接近，就越有可能发现白人、印第安人、熊、野羊等的足迹汇入最佳通道。

I have never yet met ducks in any of the lakes of this kind, but the ouzel is never wanting where the feeding-streams are perennial. Wild sheep and deer may occasionally be seen on the meadows, and very rarely a bear.

我从未在任何此类湖泊中遇到过鸭子，但在常年有进食溪流的地方，野鸭从不缺食。野羊和野鹿偶尔会出现在草地上，很少见熊。

The needles, which have accumulated for centuries, make fine beds, a fact well known to other mountaineers, such as deer and wild sheep, who paw out oval hollows and lie beneath the larger trees in safe and comfortable concealment.

几个世纪以来积累的针叶可以铺成漂亮的床，这是其他登山者众所周知的事实，例如鹿和野羊，它们会用爪子挖出椭圆形的空洞，并安全舒适地躺在大树下。