How Long Is A Staffordshire Bull Terrier Pregnant For?

Average gestation period for a dog is 59 to 63 days though can be a little sooner (like 57) or a little later (70 and you should consult your vet). You can do an ultrasound as early as around 20 days or so but a little later works better and x-rays can be done after day 45. These are standard protocol to confirm pregnancy and to check for potential problems with the whelp. At the appropriate time you begin taking temperature so you know when they enter first stage by the drop in temperature. First stage shouldn't last more than 24 hours so it's important to know when it begins.

http://drnelsonsveterinaryblog.com/2009/01/01/canine-labor--when-to-call-the-vet.aspx?ref=rss
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