This dog is 18 to 45 cm (7 to 18 inches) tall. It weighs 2.5 to 12 kg (7 to 25 pounds). Its average lifespan is 14 to 16 years. Eyes are blue, amber, brown, turquoise, or gray in color. The skin can be white, black, blue, brown, pink, tan, or sable in color. The skin tends to darken on exposure to the sun.