Do shih have an undercoat?

Shih Tzus do have an undercoat, which helps to keep them warm in cold weather and cool in hot weather. The undercoat is made up of short, dense hairs that are covered by the longer outercoat. The outercoat of a Shih Tzu is typically long and silky, and comes in a variety of colors, including black, white, red, and brown.