Dogs typically have vaginal discharge for 3 to 6 weeks after giving birth, though it can last up to 8 weeks in some cases. This discharge, called lochia, is a normal part of postpartum recovery as the uterus sheds leftover fluids, tissue, and placental remnants. Understanding what’s normal and what signals a problem can save you a lot of worry during those first weeks with a new litter.
What Normal Discharge Looks Like
In the first hours and days after whelping, the discharge is typically dark green. This color comes from a pigment released when the placenta separates from the uterine wall, and it’s completely normal. Over the following days and weeks, the color gradually shifts to reddish brown, then becomes lighter and thinner before stopping entirely.
A thin, bloody, or mucous consistency in the early days is part of the normal healing process. The key pattern to watch for is steady improvement: the discharge should get darker in color, lighter in volume, and less frequent as the weeks go on. Most dogs will be completely done by week three or four, but some healthy dogs continue to have light discharge for up to six to eight weeks, especially after larger litters.
Normal lochia does not have a strong or foul smell. You might notice a mild, slightly metallic odor from the blood content, but nothing that would make you recoil. The discharge also shouldn’t be heavy enough to soak through bedding continuously after the first couple of days.
Week-by-Week Color Progression
Here’s a general timeline of what to expect:
- Days 1 to 3: Dark green to greenish-black discharge, sometimes with small blood clots. This is the heaviest phase.
- Days 4 to 14: Transitions to reddish brown or dark red. Volume decreases noticeably.
- Weeks 3 to 6: Becomes lighter, thinner, and pinkish to pale brown. Many dogs stop completely during this window.
- Weeks 6 to 8: If still present, should be minimal and very pale. Anything beyond this point warrants attention.
Signs the Discharge Isn’t Normal
Not all postpartum discharge is harmless. The amount, odor, consistency, and color together tell you whether the uterus is healing properly or something has gone wrong. If the volume of discharge increases after it had been tapering off, or if a foul smell develops at any point, that’s a red flag for a uterine infection called metritis.
Color changes also matter. Bright yellow, gray, or vivid green discharge (as opposed to the dark greenish-black of the first day or two) can indicate pus or bacterial infection. A discharge that becomes watery and bright red after the first week, rather than darkening as expected, could point to abnormal bleeding.
Other warning signs to watch alongside the discharge include fever, lethargy, loss of appetite, continued straining as if still in labor, and neglecting the puppies. Any combination of these with abnormal discharge suggests the mother needs veterinary care promptly.
Retained Placenta
Dogs typically pass one placenta per puppy, and counting them during delivery helps you confirm everything came out. A retained placenta doesn’t always cause problems on its own. Most retained placentas are expelled naturally within a day or so. However, if placental tissue stays in the uterus too long, it can become a breeding ground for bacteria.
Signs of a retained placenta that’s causing trouble include continued straining, foul-smelling discharge, fever, and lethargy developing in the days after birth. If you weren’t able to count all the placentas during delivery and your dog develops any of these symptoms, an ultrasound can confirm whether something was left behind.
When Discharge Lasts Too Long
If your dog still has a yellowish-red or bloody vaginal discharge beyond six to eight weeks postpartum, the likely cause is a condition called subinvolution of placental sites. This happens when the spots where the placentas attached to the uterine wall don’t heal and shrink back to normal on schedule. Instead of closing off, those attachment sites continue to ooze blood.
This condition is more common in younger dogs experiencing their first litter. The discharge is typically serosanguineous, meaning it looks like a watery, pinkish-red fluid, sometimes progressing to more obvious bleeding. While subinvolution of placental sites often resolves on its own, persistent or heavy bleeding needs veterinary evaluation to rule out other problems and ensure the mother isn’t becoming anemic.
Keeping the Mother Clean and Comfortable
During the discharge period, keep the whelping box clean, dry, and in a quiet area to minimize stress. Change bedding frequently, especially in the first week when discharge is heaviest. Most dogs will groom themselves and keep the area relatively clean, but you can gently wipe the vulva with a warm, damp cloth if discharge is building up on the fur.
Monitor the discharge daily. You don’t need to examine her closely every hour, but a quick visual check of the bedding and her hindquarters once or twice a day gives you a reliable picture of whether things are progressing normally. If the bedding is increasingly stained rather than less so as the days pass, that reversal in the pattern is worth noting. Keeping a simple log of the color and approximate amount for the first two weeks makes it much easier to spot changes that might otherwise be hard to remember.