Shih Tzu Pregnancy Signs Symptoms. For dogs that are typically. Shih tzus will normally go into labor for 2 hours, this only accounts for the part of the delivery where the bitch is giving birth.
Caring for shih tzu puppies: The first stage of labor can last for 6 hours up to 12 hours, and. 1.shih tzu’s mating and ultrasound after 25 days: