The average dog pregnancy cycle is 63 days. Depending on the physical differences of the dogs, some will be three days earlier, and some will be about five days later. One month after the dog is bred, the shape, size and fetal heart rate of the fetus can be observed through abdominal ultrasound.

Dogs eat a normal diet during pregnancy, take appropriate calcium supplements, and get some exposure to the sun to help absorb calcium. Prepare the delivery room before delivery. It is easy to supplement animal protein and calcium preparations after delivery to prevent postpartum hypocalcemia.

Before giving birth, dogs will dig their nests, be anxious, restless, walk back and forth, and frequently scratch the floor or mats. The abdomen of a dog about to give birth will shrink, secretions will flow out of the genital opening, and the nipples can be squeezed. When milk is produced, some dogs will also bark.