狗子在英语中称为"puppy"。这个词来源于中世纪的拉丁语"puppis"，它的原意是"幼小的狗"。

例句：

I love playing with puppies. (我喜欢和小狗玩耍。)

The puppy wagged its tail when it saw me. (小狗看见我时，摇了摇它的尾巴。)

The puppy is so cute. (这只小狗真可爱。)