Retained placenta in dogs is less common than many breeders fear, and in most cases, the dog has simply eaten the placenta without anyone noticing. When a placenta truly is retained, treatment ranges from medication that stimulates uterine contractions to, in serious cases, surgery. This is not something to attempt removing at home. The uterus is fragile after birth, and pulling on tissue can cause tearing, hemorrhage, or severe infection.
How Placental Delivery Normally Works
In dogs, each puppy is followed by its own placenta, but the timing isn’t always one-for-one. Dogs have two uterine horns, and puppies tend to alternate between them during delivery. It’s common for two puppies to come out in sequence, followed by two placentas. This makes counting placentas during a hectic whelping session unreliable.
Cornell University’s veterinary program notes that if you’re worried about a “retained placenta,” the dog has almost certainly consumed it without you seeing. Dogs instinctively eat the membranes and afterbirth, often doing so quickly between contractions. A missing placenta count doesn’t automatically mean there’s a problem inside the uterus.
Signs That a Placenta Is Actually Retained
The key indicator is the color and duration of vaginal discharge. After whelping, dogs normally pass a dark greenish-black discharge called lochia. This color comes from a pigment released when the placental attachment sites break down. Within about 48 hours, the discharge should shift to a rust or reddish-brown color.
If the greenish-black discharge persists beyond 24 to 26 hours after delivery, that suggests retained fetal membranes or other uterine debris. Other warning signs include:
- Fever: a rectal temperature above 103°F (39.4°C) in the first few days postpartum
- Foul-smelling discharge: a distinctly rotten odor rather than the normal metallic smell of postpartum lochia
- Lethargy or loss of appetite: a mother dog who stops eating or loses interest in her puppies
- Vomiting or dehydration: signs of systemic illness developing beyond the uterus
Any combination of these symptoms in the first few days after whelping warrants a veterinary visit, not a wait-and-see approach.
How a Vet Confirms the Diagnosis
Your veterinarian will typically start with a physical exam and may use ultrasound to look at the uterus. Retained fetal membranes show up as a uterus that’s still dilated and filled with bright, echogenic material: blood clots, tissue debris, or the membranes themselves. This is distinct from the normal postpartum uterus, which gradually shrinks and empties over the first week or two.
In some cases, X-rays may be taken to rule out a retained puppy, which is a more urgent problem than retained membranes alone. Blood work can reveal whether infection has begun spreading systemically.
Medical Treatment: What Your Vet Will Try First
The first-line treatment for a confirmed retained placenta is a hormone called oxytocin, which stimulates the uterus to contract and expel the remaining tissue. This is the same hormone the dog’s body releases naturally during nursing, which is one reason why letting puppies nurse frequently in the first days after birth helps the uterus clear itself.
Oxytocin must be given by a veterinarian. The dosing and timing matter, and there are situations where it should not be used at all, including if the cervix has already closed, if there’s a retained puppy blocking the way, or if the uterus is damaged or ruptured. Giving oxytocin to a uterus that can’t safely contract can cause it to tear. This is why home attempts with oxytocin purchased from farm supply stores are dangerous.
Antibiotics are commonly prescribed alongside oxytocin to prevent or treat bacterial infection in the uterus. The warm, blood-rich environment of the postpartum uterus is an ideal breeding ground for bacteria, and decomposing placental tissue accelerates this process considerably.
Why You Should Never Pull It Out Yourself
If you can see placental tissue hanging from the vulva, it may be tempting to pull it free. Don’t. The placenta attaches to the uterine wall through a dense network of blood vessels. Pulling on it can tear the uterine lining, cause hemorrhage that’s difficult to stop, or leave behind fragments that become a source of infection. Even veterinarians rarely attempt manual removal through the birth canal in dogs because the uterine horns are long, narrow, and not safely accessible without surgical exposure.
If tissue is visibly protruding, keep it as clean as possible and get to a vet. Wrapping it in a clean, damp cloth can prevent the dog from chewing on it and pulling it herself.
When Surgery Becomes Necessary
If oxytocin and antibiotics don’t resolve the problem, or if infection has already taken hold, surgery is the next step. The most common surgical option is an ovariohysterectomy, which is a complete spay that removes the uterus and ovaries. This eliminates the source of infection entirely.
Surgery becomes urgent when the retained placenta progresses to acute metritis, a serious uterine infection. Signs that infection has escalated include high fever, rapid heart rate, vomiting, and a dog that appears visibly ill rather than just tired from whelping. If infection or tissue death is identified in the uterus, ovariohysterectomy is the standard recommendation rather than continued medical management. At that point, trying to save the uterus puts the dog’s life at risk.
For breeders who want to preserve the dog’s reproductive ability, this creates a difficult decision. The sooner a retained placenta is caught, the more likely medical treatment alone will work and the uterus can be saved. Waiting until the dog is clearly septic usually means surgery is the only safe option.
Recovery and What to Watch For
If the retained placenta passes with medical treatment, recovery is straightforward. The discharge should gradually lighten over the next one to two weeks, shifting from dark to reddish-brown to clear. The dog should remain alert, eat normally, and nurse her puppies without difficulty. A brief recheck ultrasound a few days after treatment can confirm the uterus is emptying properly.
After an emergency spay, the mother can still nurse her puppies. Milk production is driven by hormones already circulating in her system and by the stimulation of nursing itself. Most dogs recover from the surgery within 10 to 14 days, though they’ll need help keeping the incision clean while managing a litter.
The most important thing you can do as an owner is monitor closely in the first 48 hours after whelping. Count placentas if you can, but don’t rely on that count alone. Watch the discharge color, take the dog’s temperature twice daily, and note any changes in appetite or behavior. Catching a retained placenta early, before infection sets in, makes the difference between a simple injection and an emergency surgery.