Whelping is the term for a dog giving birth. It covers everything from the first signs of labor through delivery of each puppy and their placentas. The entire process can last anywhere from a few hours to over a day, depending on litter size and the individual dog. Whether you’re preparing for a planned litter or helping a dog through an unexpected pregnancy, understanding each phase helps you know what’s normal and when something has gone wrong.
The Three Stages of Labor
Canine labor unfolds in three distinct stages, and stages two and three actually repeat with each puppy born.
Stage one is the longest and least visible. The uterus begins contracting, but you won’t see obvious pushing. Your dog may pace, pant, shiver, refuse food, or seek out a quiet spot. This stage can last up to 24 hours. One reliable signal that stage one is approaching: a drop in rectal temperature below 99 to 100°F, which typically happens 24 to 36 hours before active labor begins. If your dog’s temperature drops but she doesn’t progress to active labor within 24 hours, that’s a concern.
Stage two is active delivery. You’ll see visible abdominal contractions and straining as each puppy moves through the birth canal. Each puppy typically arrives within 0 to 30 minutes of active pushing, and gaps of up to two hours between puppies are normal. If more than two hours pass with no puppy, or your dog is straining hard without producing a puppy, contact your veterinarian.
Stage three is the delivery of each placenta, which usually follows shortly after the puppy it belongs to. Stages two and three alternate until the entire litter is born. It’s worth counting placentas to make sure one arrives for every puppy.
What Happens With the Placenta
A retained placenta sounds alarming, but it doesn’t always cause problems. In many cases, a retained placenta passes on its own. It also doesn’t commonly lead to uterine infection. That said, warning signs of a retained placenta that isn’t resolving include continued straining after all puppies have been delivered, abnormal vaginal discharge, fever, and lethargy. If you notice these signs, a veterinarian can confirm the diagnosis with an ultrasound and help the placenta pass if needed.
Helping Newborn Puppies Breathe
Most mother dogs instinctively tear open the amniotic sac, bite through the umbilical cord, and lick each puppy vigorously to stimulate breathing. If the mother doesn’t do this within a minute or two, or if she’s busy delivering the next puppy, you may need to step in.
The essentials are simple: clear the membrane from the puppy’s face and airway, then dry and rub the puppy briskly with a clean towel. That friction mimics the mother’s licking and stimulates the first breaths. In most cases, removing the fetal membranes and applying this kind of tactile stimulation is all a newborn puppy needs to start breathing on its own.
Signs That Something Is Wrong
Not every difficult delivery is an emergency, but true dystocia (obstructed labor) needs fast veterinary attention. According to UC Davis School of Veterinary Medicine, you should treat the following as urgent:
- No labor at term. If your dog is past 70 to 72 days from the first breeding and hasn’t started labor, she may be overdue.
- Stalled progression. Temperature dropped but no stage one labor within 24 to 36 hours, or stage one started but no active pushing within 24 hours.
- Prolonged straining. More than two hours between puppies, or strong contractions for 30 minutes with no puppy delivered.
- Visible distress. Excessive pain, depression, green or heavy vaginal bleeding before a puppy has been delivered, or a puppy visibly stuck in the birth canal.
- Known risk factors. Breeds with narrow pelvises or large heads (like bulldogs), a size mismatch between the mother and sire, or a history of previous difficult births.
Preparing a Whelping Area
A whelping box gives the mother a contained, comfortable space and keeps the puppies safe from being rolled onto or wandering away. Set it up in a quiet, low-traffic area of your home at least a week before the due date so the mother can get used to it.
Temperature matters more than most people realize. Newborn puppies cannot regulate their own body heat until they’re about two and a half weeks old. The whelping box should stay around 85°F for the first couple of weeks, using a heating pad, heat lamp, or a product like a microwave-safe warming disc. A supplemental heat source is especially important when the mother gets up to eat or go outside, since the puppies rely on her body warmth and their littermates to stay warm.
Supplies to Have Ready
You don’t need a full veterinary kit, but a few items make a real difference:
- Clean towels. Lots of them, for drying puppies and keeping the area clean. Warming a stack on a heating pad means they’re ready when you need them.
- Hemostats. For clamping the umbilical cord if the mother doesn’t chew through it. Size them to your breed: smaller hemostats for toy breeds, larger ones for big dogs.
- Iodine pads or liquid betadine. To disinfect the umbilical cord stump after it’s cut or separated.
- A small holding box with a heating pad. A safe, warm spot to place puppies temporarily while the mother delivers the next one.
- A bulb syringe. For gently suctioning fluid from a puppy’s nose and mouth if needed.
- A scale. Weighing each puppy at birth and daily afterward is the best way to catch feeding problems early.
Feeding the Mother After Whelping
Nursing a litter is one of the most energy-demanding things a dog’s body can do. During the first week after birth, a mother dog typically needs 1.5 times her normal calorie intake. By the second week, that doubles. At peak lactation, around weeks three and four, she may need two and a half to three times her normal calories just to maintain her weight and produce enough milk.
Most breeders switch the mother to a high-calorie puppy food during late pregnancy and continue it through weaning. Free-choice feeding, where food is available at all times rather than given in set meals, helps her take in enough calories without needing to eat enormous portions at once. Fresh water should always be within easy reach, since milk production requires significant hydration.
The First 48 Hours
Once all the puppies are born, the focus shifts to making sure each one is nursing. Colostrum, the first milk produced in the hours after birth, delivers critical antibodies that protect the puppies from infection during their first weeks of life. Puppies that don’t nurse within the first few hours are at a significant disadvantage.
Watch for puppies that seem weak, cry constantly, or get pushed away from the mother by larger littermates. A healthy newborn puppy is warm, quiet when nursing, and gains weight every day. Weight loss in the first 24 hours or failure to gain by day two is an early red flag that a puppy isn’t getting enough milk and may need supplemental feeding.