Because it's already adding time to an already time-intensive process, meaning that no one carries around their birth certificate or certificate of Indian blood regularly.

因为这已经给一个本来就很耗时的过程增加了时间，意思是没有人会随身携带出生证明或印安证书。

NARRATOR: A pedigree is proof of a dog's lineage.

叙述：证书是证明狗的缘的凭证。

So why are pedigree dogs so expensive?

那么为什么证书狗这么贵呢？

Once you've paid the $10,000 for a pedigree purebred dog, they can be costly to look after.

一旦你花了1万美元购买了一只纯种犬的证书，照顾它们的成本也会很高。

Breeders will also invest in pedigree pets for sponsorship deals and prize money at international shows, driving their demand and price up even further.

繁殖还会投资证书宠物以参与赞助协议和国际展会的奖金，进一步推高了这些宠物的需求和格。