How long is a dog pregnant for? A dog is pregnant for about 63 days. This is measured from the day they ovulate (release their eggs) to the day the puppies arrive. Read more…. Canine Scanning2018-07-13T11:26:24+00:00 Share this with friends ... FacebookTwitterTumblrPinterestEmail Leave A Comment Cancel replyYou must be logged in to post a comment.