一个非常有用且地道的表达——cat and dog life, 这个短语的含义不是指“猫和狗的生活”，其正确的含义是：

cat and dog life 争吵不休的生活

My husband and I led a cat and dog life. After a couple of years, we decided to break up.

我和我丈夫过着争吵不休的日子。几年后，我们决定分手。

She and her sister lead a cat and dog life together; they are always quarreling.

现在她们两姐妹成天吵架，过着争吵不休的生活。

They lead a cat-and-dog life, so they decided to separated temporarily.

他俩老是吵架，于是决定暂时分居。

To my surprise, that family leads a cat and dog life. But they love each other and support one another when someone's in trouble.

令我惊奇的是，这个家庭过着争吵的生活。但是他们很爱彼此，当某人遇到麻烦的时候会得到大家的支持。

出处：头条号 @饼哥英语口语