Most expressions in Chinese about the dog, for example, "a homeless dog", "a mad dog", "a running dog" and "a dog catching a mouse", have bad meanings.

中文中关于狗的大多数表达，如“流浪狗”、“疯狗”、“走狗”和“狗抓老鼠”，都有不好的含义。

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Chinese words found in English are mostly direct borrowings - for example, buzheteng, literal translation running dog - and blending, such as "taikonaut", the word for a Chinese astronaut.

英文中的中文词汇大多是直接借用的，比如“buzheteng”就是“不折腾”的直译，“走狗”翻译成“running dog”。 另外还有混合构词的，像“taikonaut”指的是“中国宇航员”。

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She rode off down the road with the dog running behind.

她骑车沿路而去，狗跟在后面奔跑着。

《牛津词典》

We use a leash to walk our pet dogs, The leash keeps dog from running away or getting into trouble.

VOA: special.2009.03.29

Vick recently served eighteen months in federal prison for running a dog fighting operation in which he also killed dogs.

VOA: special.2009.08.01

The North hated him as a hardliner and had long hurled the usual epithets: traitor, puppet, US running dog, etc.

BBC: Mobilising the propagandists in North Korea

"The blind traitor is a running dog for America, where he leads a decadent life and gets paid for his sell-out, " the poster reads.

WSJ: Chinese activist's brother says he was beaten

Because you can get the exercise you need from walking your dog vigorously, running with your dog, doing some push-ups at home, or just playing.

WHITEHOUSE: President's Council on Fitness, Sports & Nutrition