纯种狗用英语怎么说？

纯种狗

...a pedigree dog.

pedigree

n. 血统，家谱，血统表；adj. 纯种的，有血统来源的；

例句
Like any other commodity, pedigree dogs are covered by the Sale of Goods Act.
像其他商品一样，纯种狗的买卖同样受《货物买卖法》的约束。

dog

n. 狗，蹩脚货，丑女人，卑鄙小人；v. 困扰，跟踪；

例句
He dropped his sausage on the pavement and someone's dog ate it, mustard and all.
他把香肠丢在人行道上，不知是谁家的狗将香肠甚至连带芥末都吃个了精光。