How Long Are Shih Tzu's Pregnant?

Average gestation is 59 to 63 days though can be a little sooner (like 57) or later (70 and you need to call your vet). If you think your girl may be pregnant call your vet to find out when to start the testing and monitoring (ultrasound and x-rays are standard protocol). All breeding's should be closely monitored by a veterinarian (standard protocol) as so many things can and do go wrong and hopefully they are experienced with your breed and with whelp. You start your count from the first tie and begin taking temperature at the appropriate time.

www.learntobreed.com
www.dogbreedinfo.com
www.dogplay.com
www.woodhavenlabs.com
www.justanswer.com
http://drnelsonsveterinaryblog.com/2009/01/01/canine-labor--when-to-call-the-vet.aspx?ref=rss