Tulip's x-ray - guess how many puppies! The Countdown is On! By Day 60 of pregnancy, Tulip's puppies are considered fully developed. Their skeletons and internal organs are complete, and they are spending these final days in the womb doing what they do best—gaining weight, building strength, and maturing their digestive systems in preparation for life outside the womb. A normal canine gestation lasts approximately 63 days, although healthy puppies can safely arrive anywhere from 58 to 68 days. At this stage, the puppies are actively preparing for birth, and so is Tulip. We've set up the whelping box in our bedroom so she'll have a quiet, comfortable place to deliver her puppies. She checks it out from time to time but doesn't seem overly interested just yet. Instead, she's convinced that the perfect spot is beneath one of our cedar trees in the backyard. Despite my best efforts to discourage the digging, she's determined to create her own little den for he...