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What Kind Of Dogs Are Sled Dogs?
雪橇犬是什么品种？
In books and movies like Call of the Wild, huge, vicious huskies pull sleds for hundreds of miles over the Alaskan tundra.
书中或《野性的呼唤》等影片中描绘的巨型、凶猛的哈士奇能在阿拉斯加的冻原上驰骋数百英里。
A Moment of Science wonders, what kind of dogs are sled dogs?
《科学一刻》栏目好奇，到底什么品种的狗是雪橇犬呢？
Most champion sled dogs are not pure husky: in fact, the “Alaskan Husky” isn’t really a breed at all: it’s a mix of various breeds.
大多数冠军雪橇犬都不是纯种哈士奇：其实，所谓的“阿拉斯加哈士奇”压根并非纯种，而是由多个品种杂交而成。
Although not pure bred, every sled dog must be carefully bred for life on the trail.
尽管并非纯种，但是每条雪橇犬都经过精心喂养才能拉雪橇。
The dogs need heavy coats to protect them from the cold, and tough feet to prevent injuries.
雪橇犬需穿戴厚重的保暖服装御寒，以及拥有坚韧的双脚防止受伤。
Unlike the tough dogs in the movies, dogs with softer feet wear booties when they run.
与影片中的雪橇犬不同的是，足部柔嫩的狗在拉雪橇时会穿上短靴。
The dogs also need compact bodies to maximize endurance.
雪橇犬需要结实的身躯才能发挥最大的耐力。
The sled dogs’ remarkable endurance is thanks to their large heart-to-body ratio, and their ability to carry oxygen from the lungs to the muscles, which is about three times that of a human being.
雪橇犬非凡的耐力主要得益于心脏与身体的超常比例，它们将肺部氧气输送给肌肉的能力是人类的三倍。
译文为可可英语翻译，未经授权请勿转载!
