Companion Animals

Dog Pyometra: Emergency Recognition and Prevention

Pyometra is a life-threatening uterine infection in intact female dogs that is entirely preventable through spaying; recognition of signs enables lifesaving emergency treatment.

Key Facts

Pyometra affects approximately 25% of intact female dogs before age 10
Open pyometra causes a purulent vaginal discharge; closed pyometra has no discharge and is more dangerous
Toxemia from bacterial infection can cause kidney failure and septic shock within days
Emergency ovariohysterectomy is curative with over 90% survival if treated early
Spaying before the first heat virtually eliminates pyometra risk

Welfare Considerations

Pyometra causes severe systemic illness from bacterial toxemia - affected dogs deteriorate rapidly from apparently unwell to in septic shock. Closed pyometra is particularly dangerous because the absence of discharge can mislead owners into delaying veterinary care. The welfare case for early spaying of females not intended for breeding is compelling - it eliminates the risk of this agonizing, life-threatening condition entirely.

What You Can Do

Spay intact female dogs not intended for breeding before their first heat where veterinary advice supports it
Seek emergency veterinary care immediately for any intact female dog showing lethargy, vomiting, or increased thirst
Learn the signs of pyometra - it can occur any time after a heat cycle, including in middle-aged dogs
Ensure all rescue and shelter female dogs are spayed before adoption