Miscarriage in Cats
What Is Miscarriage in Cats?
Miscarriage in cats refers to the loss of kittens before birth. This may happen early in pregnancy (resorption) or later as visible abortion. Some queens may lose one or more kittens while carrying the rest to term. Others may lose the entire litter.
What Are Common Causes of Miscarriage in Cats
Several factors may lead to miscarriage in cats:
- Infections – Viral, bacterial, or parasitic infections such as feline herpesvirus, panleukopenia, toxoplasmosis, or FeLV.
- Hormonal imbalance – Insufficient progesterone may prevent a pregnancy from continuing.
- Poor nutrition or body condition – Queens in poor health may not carry to term.
- Physical trauma or stress – Injury, transport, or a sudden change in environment can trigger loss.
- Genetic or chromosomal abnormalities – Often undetectable, but may affect foetal development.
- Uterine problems – Past infections or structural issues can lead to complications.
Signs of Miscarriage in Cats
Sometimes, miscarriage is silent. In other cases, signs include:
- Vaginal bleeding or discharge
- Abdominal cramping or distress
- Fever or lethargy
- Loss of appetite
- Delivering stillborn kittens
- Premature labour
In early pregnancy, breeders may only notice that the queen’s abdomen no longer grows, or that she shows signs of coming back into heat.
What Should Breeders Do If They Suspect a Miscarriage?
If miscarriage is suspected:
- Seek veterinary care immediately – An ultrasound or x-ray will help assess the uterus and any remaining kittens.
- Retain samples of discharge or stillborns for testing, if possible.
- Support recovery – Queens need rest, fluids, and gentle monitoring after a loss.
- Wait before rebreeding – Allow full physical and emotional recovery of your cat. A vet check is vital before the next mating.
Preventing Miscarriage in Breeding Cats
While not all causes can be controlled, breeders can lower the risk by:
- Ensuring queens are in top health before mating
- Testing for infectious diseases
- Providing balanced nutrition
- Avoiding exposure to sick cats or environmental stress
- Using progesterone testing if hormone issues are suspected
- Keeping accurate records of heat cycles, matings, and past pregnancies
As an RPBA member, you gain access to health tracking tools, breeder checklist templates, and expert guides to help manage reproductive health.
When to Retire a Breeding Queen
Recurring miscarriages, poor recovery, or health issues may indicate it’s time to retire a queen from breeding. Spaying is often recommended to prevent future complications and allow the cat to live a healthy, stress-free life.
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Miscarriage in cats can be heartbreaking, but it also offers a chance to review health, care, and breeding practices. Interested in more support? Learn how RPBA membership helps responsible breeders like you.
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Frequently Asked Questions About Miscarriage in Cats
What’s the difference between resorption and miscarriage in cats?
Resorption occurs early in pregnancy when the queen reabsorbs one or more embryos. Miscarriage refers to the visible expulsion of foetuses, usually later in gestation.
Can a cat miscarry and still carry other kittens to term?
Yes. Some queens may lose one or more kittens and still deliver healthy ones. Close monitoring is essential.
Will a cat bleed during miscarriage?
Sometimes. Vaginal discharge may be clear, bloody, or contain tissue. Any unusual discharge should be examined by a vet.
Can stress cause miscarriage in cats?
Stress can contribute. Avoid transport, loud noises, or environmental changes during pregnancy.
Is miscarriage in cats contagious to other cats?
Only if caused by infectious disease. Quarantine and testing are important if infection is suspected.
How soon can a cat be bred again after miscarriage?
Breeders should wait at least one full heat cycle and consult a vet. Focus on recovery first.
Are first pregnancies more likely to fail?
Not always. Young, healthy queens can carry successfully, but inexperience, poor timing, or health factors may raise the risk.
