breed of toy dog known for its hairless body and hairy head, tail, and feet; used to hunt vermin on Chinese ships during plague pandemic; rarer powder puff variation also exists; one of few dogs that have sweat glands, so it does not pant to cool down; coat is soft and silky and can be any combination of colors; ears are large, uncropped, and erect; tail is slender and tapers to a curve; eye color matches coat color; adult stands 12–13 in. (30–33 cm) tall at shoulders and weighs 5–10 lbs (2–5 kg); originated in either China or Africa.