Green Discharge During Dog Pregnancy: When to Seek Emergency Care

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Dog · Green Discharge From Vulva During Pregnancy
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TL;DR: Green discharge in a pregnant dog is a critical emergency if a puppy is not born within 15 to 30 minutes, as it indicates life-threatening placental separation. Immediate veterinary intervention is necessary to save the mother and her puppies.

What does it mean if my pregnant dog has green discharge?

Green discharge in a pregnant dog is usually caused by a pigment called uteroverdin, which is released when the placenta separates from the uterine wall. While this is a normal occurrence during the active birthing process, seeing it before labor begins or without the arrival of a puppy is a major cause for concern.

Why is green discharge in a pregnant dog considered a medical emergency?

  • Green discharge is a high-urgency medical emergency if a puppy is not born within 15 to 30 minutes of its appearance.
  • The presence of the discharge indicates that the placenta has detached, which compromises the puppies' oxygen supply.
  • This situation often points to fetal distress, stalled labor, or a potential infection, requiring immediate veterinary intervention to save the mother and pups.

How does taking a photo of the discharge help the veterinary triage process?

  • A clear photo allows the medical team to visually confirm the color, viscosity, and amount of the discharge.
  • Having a visual helps the triage nurse prioritize your case more accurately.
  • The clinic can prepare the necessary diagnostic tools or surgical equipment before you even arrive.

Clinical Context (Merck Veterinary Manual)

During canine parturition, a green vaginal discharge (uteroverdin) is normal. However, immediate veterinary attention is warranted if a dark green discharge is observed before the delivery of any neonates, as this indicates placental separation.

Chapter: Reproduction

Source: The Merck Veterinary Manual, 11th Edition (Page 2227)

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Compiled by the CheckPet Editorial Team, aligned with the Merck Veterinary Manual. Last updated June 30, 2026.

This article is for general informational purposes only and is not a substitute for professional veterinary advice, diagnosis, or treatment. If you think your pet may be unwell, contact a licensed veterinarian.

Frequently Asked Questions

Is green discharge ever considered normal?
It is only normal if a puppy is delivered almost immediately (within 30 minutes) after the discharge appears. If no puppy arrives, it is a sign of placental separation and a veterinary emergency.
What if my dog is acting fine but has green discharge?
Even if your dog is acting normally, green discharge is a physiological sign that the puppies are losing their life-support system. Do not wait for her to show signs of pain or illness.
Should I wait until morning to call the vet?
No. If you see green discharge, you should contact an emergency 24-hour veterinary facility immediately, as fetal survival depends on rapid intervention.

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