14 Oct 06
Pregnancy, also called the gestation period, ranges from 60 to 67 days, averaging 63 days. Most dogs deliver (whelp) between days 63 and 65. The only way to accurately determine the stage of pregnancy is to count days from the time of breeding. If at all possible, the breeding date(s) should be recorded. T he mother should be examined three weeks after breeding to confirm her pregnancy.