The dog snapped [bit] at my leg.

那条狗咬了我的腿。

《新英汉大辞典》

Our dog has a bald patch on its leg.

我们的狗腿上脱了一片毛。

《牛津词典》

The virus moves from a leg bitten by a rabid dog up the long axons leading to the spinal cord, then jumps to dendrites of other nerves and travels up to the brain, where it causes horrific damage.

在被携带狂犬病毒的狗咬伤后，病毒会从腿部沿着通向脊髓的长轴突向上游走，然后转向其他神经的树突并向前行进入大脑，它会对大脑造成严重的伤害。

youdao

Then all of a sudden Smiley's dog would grab that other dog by his back leg and hang on till the men said it was over.

VOA: special.2009.08.29

And it turns out that the dog— when they zapped part of its brain, its leg would kick up.

结果是那只狗,当研究者们电击某个大脑区域时,狗的四肢便会乱踢起来

耶鲁公开课 - 心理学导论课程节选

What's more, the chicken-goat (choat... gicken?) and leg-raising-dog come standard issue on every player -- that's no skin, son.

ENGADGET: IRiver's S7 previewed, long live the choat!

When Singapore refused to replace the causeway, he proposed demolishing the Malaysian half anyway and replacing it with a bridge, even though the limited space would have necessitated a wonky, dog-leg design.

ECONOMIST: A truce across the Johor strait

Down a dog-leg alleyway off a nondescript stretch of busy Shijo Avenue, and up one of the narrowest flights of stairs I have ever climbed, I meet the fourth and fifth generations of the Takenaka printing family.

BBC: The art of Japan