Most house cats live a good life.

大多数家猫生活舒适。

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Free from the threat of cats, fairy terns have returned to the island—and forsaken their ancestral cliffs for a new life among the leaves and branches.

没有了猫的威胁，仙女般的燕鸥又返回到岛上。 但不像其祖先那样栖息在峭壁上，她们在大树的枝叶间开始了自己的新生活。

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We may also love cats because their relaxation renders us a substantive sense of life.

喜欢猫，只因为他们的慵懒而自在，有一种踏实感。

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Or take Toxoplasma, a protozoan that needs to move between cats and their prey and back again in order to complete its life cycle.

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Sceptics point out that if big cats have been surviving, and breeding, in the wild for all this time, they only have a natural life span of some 20 years.

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