Pyometra is a life-threatening uterine infection in unspayed female dogs — emergency surgery costs $1,500-$4,000. The uterus fills with pus and bacteria, and without surgery, the uterus can rupture and cause sepsis. It typically occurs 2-8 weeks after a heat cycle. The only treatment is emergency spay surgery. Spaying your dog before her first heat eliminates the risk entirely.
Pyometra occurs when the uterus becomes infected, usually by E. coli bacteria. After each heat cycle, progesterone thickens the uterine lining and suppresses the immune response — creating ideal conditions for bacterial growth. The risk increases with each heat cycle the dog goes through without becoming pregnant. It's most common in middle-aged to older unspayed females, but can occur at any age. Risk increases with each heat cycle
Vaginal discharge — pus-like, often bloody or foul-smelling (in 'open' pyometra). In 'closed' pyometra, there's no discharge — the pus is trapped inside. Increased thirst and urination. Lethargy and depression. Loss of appetite. Vomiting. Swollen, painful abdomen. Fever. Symptoms typically appear 2-8 weeks after the last heat cycle. Closed pyometra with no discharge is more dangerous
Abdominal ultrasound ($200-$400) is the primary diagnostic tool — it shows the enlarged, fluid-filled uterus. Blood work ($100-$200) reveals elevated white blood cells, kidney function changes, and other signs of infection and sepsis. X-rays ($150-$300) can also show the enlarged uterus. History of recent heat cycle in an intact female is an important clue. Average $300-$600
Emergency ovariohysterectomy (spay) is the standard treatment — removing the infected uterus and ovaries ($1,500-$4,000). The surgery is more complex and risky than a routine spay because the uterus is enlarged, fragile, and full of infected material. IV fluids, antibiotics, and hospitalization for 1-3 days are standard. Medical treatment with prostaglandins is sometimes attempted for breeding dogs but is riskier. Average $1,500-$4,000
Diagnosis + emergency surgery + hospitalization. A routine spay costs $200-$500 and prevents pyometra entirely.
All unspayed female dogs are at risk. Golden Retrievers, Rottweilers, Bernese Mountain Dogs, and Cavaliers have higher rates.
Post-surgery recovery takes 1-2 weeks. Most dogs feel dramatically better within 24-48 hours of surgery.
Spaying eliminates the risk completely. The earlier the spay, the lower the lifetime risk. Spaying is the best prevention.
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Diagnosis + emergency surgery + hospitalization.
Most pet insurance policies cover pyometra diagnosis and emergency surgery as a standard illness. Standard 14-day illness waiting period applies. The emergency spay, hospitalization, medications, and follow-up care are typically covered.
Some insurers argue that pyometra is preventable through elective spaying and may limit coverage. Others cover it fully as an emergency illness. If you chose not to spay your dog, verify that your policy covers pyometra specifically — don't assume it's covered.
Emergency pyometra spay costs $1,500-$4,000. An elective spay costs $200-$500. Insurance covers the emergency surgery but not elective spaying (which is preventive care). The math is clear — a $300 elective spay is cheaper than a $3,000 emergency one.
Some policies exclude reproductive conditions in intact (unspayed/unneutered) dogs. This could include pyometra. Read the exclusions list carefully if you plan to keep your female dog intact. Not all policies treat reproductive emergencies the same way.
🇺🇸 US Pet Insurance Guide
Our guide shows exactly what to check in the fine print — before your first claim gets denied.
Insurance GuideBreeds Most Affected by Pyometra
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