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Pyometra

Also known as: Uterine infection

Quick answer

A life-threatening uterine infection in unspayed female dogs and cats, often developing weeks after a season. Open pyometra may show discharge; closed pyometra is especially dangerous. Emergency — unspayed females with these signs need urgent vet care.

Definition

A life-threatening uterine infection in unspayed female dogs and cats, often developing weeks after a season. Open pyometra may show discharge; closed pyometra is especially dangerous.

Symptoms

  • Lethargy and reduced appetite
  • Increased thirst and urination
  • Vomiting
  • Vaginal discharge (may be pus-like)
  • Swollen abdomen

When to see a vet

Emergency — unspayed females with these signs need urgent vet care. Pyometra requires surgery in most cases.

Related guides & tools

Frequently Asked Questions

What is Pyometra?
A life-threatening uterine infection in unspayed female dogs and cats, often developing weeks after a season. Open pyometra may show discharge; closed pyometra is especially dangerous.
What are the symptoms of pyometra?
Common signs include Lethargy and reduced appetite, Increased thirst and urination, Vomiting, Vaginal discharge (may be pus-like). This is not a complete list — individual pets vary. See linked guides for fuller context.
When should I see a vet about pyometra?
Emergency — unspayed females with these signs need urgent vet care. Pyometra requires surgery in most cases.

When it can’t wait, call your vet. Breathing difficulty, collapse or suspected poisoning need urgent advice.

Find emergency care