How long is a dog's pregnancy? - Animal Hospital Of Statesville
So a dog's pregnancy is 63 days from the day of ovulation, which is relevant, again, when you’re using progesterone time. If you go off breeding dates, it's not as accurate. You have a two-week window of when she might, which is a long window, considering her pregnancy is eight weeks. So two of those eight weeks, you don't know, which can be a gray area. But the basic answer is about two months.
The signs at the beginning can be subtle if you weren't intentionally breeding. And so then you may not notice until she's further along and starts showing her pregnancy. And usually, by the time she starts showing her pregnancy, you've got a couple of weeks until she’s due.