When most people think of pets, they think of dogs or cats and mice or hamsters.

当大多数人认为宠物，他们认为狗或猫，鼠或仓鼠。

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Dozens of animals have been cloned since that first lamb—mice, cats, cows and, most recently, a dog—and it's becoming increasingly clear that they are all, in one way or another, defective.

自从第一只羊被克隆以来，已经有几十种动物被克隆了，包括老鼠、猫、牛和最近的一只狗；而且越来越明显的是，这些动物都有这样或那样的缺陷。

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Mice are naturally terrified of cats, and usually panic or flee at the smell of one.

研究小组带头人Ko Kobayakawa说，老鼠天生就是怕猫的，而且经常是在嗅到猫的气味就会害怕并逃跑。

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