One great male can shape a whole breed. We DNA tested Chihuahua males and found 83% share one male line from the 1920s. Here is how popular sires shrink a breed and spread disease, and what breeders can do.

Many dog breeders using Facebook to share their passion and connect with potential puppy owners face the frustration of being flagged or res

Chihuahuas have two coats: smooth and long. SIPGS data on FGF5, why most smooths carry long coat, and why double coat and triple coat are myths.

Explore the GH1 mutation in Chihuahuas, its connection to small size, and why breeders and owners shouldn’t be alarmed by Embark testing res

Wondering if it’s rude to ask a dog breeder about puppy prices first? Learn why it’s okay to ask and how transparency about costs benefits b

Learn how genetic testing has replaced outdated test breeding methods to create healthier, more ethical Chihuahua breeding programs focused