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Saber-tooth died out, but another big cat survived.
劍齒虎滅絕了，但是另一種大型貓科動物幸存了下來。
The puma may have been more able to adapt because its diet is more varied and includes small prey. The grizzly bear also lived through the post Ice Age changes and now thrives in North America. Once again, a varied diet of meat and plants made it a versatile survivor.
美洲獅或許有更強的適應能力，這是因為他們的飲食多種多樣，它們同樣捕食一些小體型獵物。灰熊也在同樣在冰河時代后期的巨變中幸存了下來，現在在北美洲代代繁衍。同樣，不挑剔的飲食習慣使它們幸存了下來。
The moose is now the largest browser on the continent. During the last Ice Age, moose were restricted to the far north, but after the ice melted, they spread south. They took the place of mastodons and the larger stag-moose, both of which became extinct.
目前，駝鹿是這片大陸體型最大的食草動物，在冰河時代后期，他們只能在遙遠的北方生存，然而在冰雪融化后，他們開始向南方遷徙。他們取代了乳齒象和體型較大的牡鹿，這兩種動物已經滅絕了。
Bison, too, were to benefit from the post Ice Age changes. They managed to survive the draught, eventually expanding in number to replace the horse as dominant grazer. As ruminants with multi-chambered stomachs, bison can extract more nutrients from grass and this may help explain why they survived when other grazers such as the wild horses did not.
美洲野牛也從冰河時代后期的巨變中獲益。他們從干旱存活了下來，并最終在數量上超過了馬，成為了最大的食草群體。正是由于野牛是反芻動物，它們由多個儲存食物的消化器官，因此能夠從草中吸收更多的營養，這也許能夠解釋為什么他們能夠幸存下來，而像野馬一樣的食草動物卻已經滅絕。
While all these creatures were adapting to their changing landscape, another animal was just beginning to make North America its home. It’s thought the dog arrived with early people and its descendents are still with us today. The Carolina dog lives in the woods of South Carolina.
而正當這些生物正在適應變化的地貌時，另一種動物在北美大陸的生活則如家中舒適。狗被認為是隨著早起的人類一同來到北美大陸的，他們的后代至今仍和我們同存。卡羅來納犬就生存在卡羅萊納州南部的森林里。
Like most primitive dogs, it makes its den in the ground or in hollow tree trunks. The Carolina dog is often called the American dingo. It does look like its Australian relative, but links between the two may go deeper than that. Genetic analysis of the Carolina dogs suggests they are closely related to primitive wild dogs like the dingo.
和大多數的野犬一樣，它們把洞穴建在地下或者樹洞中，卡羅來納犬經常被稱做美國澳洲野犬，它們的相貌于澳洲野犬十分相似，但是兩者之間的聯系可能更加密切，卡羅萊納犬的遺傳基因表明，它們和澳洲野狗一樣與原始野狗有著密切的聯系。
英文文本來自普特英語，譯文屬可可原創，僅供學習交流使用，未經許可不得轉載。
