Why Spaying Your Cat Is Different to Spaying a Dog
Cats and dogs are often discussed together when it comes to neutering, but the evidence base — and therefore the guidance — differs meaningfully between the two species. For female cats, the International Society of Feline Medicine (ISFM) and the WSAVA (World Small Animal Veterinary Association) both support pre-pubertal spaying, typically at four to six months of age, as the evidence consistently shows this to be safe and beneficial. This contrasts with the more cautious approach now advised for large-breed dogs.
Understanding why spaying is particularly important for cats — and what the procedure involves — helps owners make a confident, informed decision.
Ovariectomy vs Ovariohysterectomy in Cats
As with dogs, there are two main surgical options. Ovariohysterectomy (OHE) removes both the ovaries and the uterus. Ovariectomy (OE) removes only the ovaries. In continental Europe, ovariectomy has become the standard approach for young, healthy cats, reflecting evidence that a healthy uterus with no ovarian stimulation will not develop pyometra. German, French, and Spanish veterinary schools predominantly train to this standard.
In the United Kingdom, the RCVS (Royal College of Veterinary Surgeons) acknowledges both approaches as acceptable, and UK practice is shifting gradually towards ovariectomy, though ovariohysterectomy remains common, particularly in older cats or those with suspected uterine pathology.
The cat spay is performed under general anaesthesia via a flank incision (common in some European countries) or a midline ventral incision (more typical in the UK and Spain). The flank approach leaves a more visible scar on the side but is considered equally effective.
When to Spay: The Timing Recommendation
The ISFM and WSAVA both advise spaying cats at four to six months of age, before the onset of puberty. In cats, unlike large-breed dogs, the research does not show the same orthopaedic or oncological risks associated with early neutering. Pre-pubertal spaying in cats is well evidenced and widely practised.
Cats can reach sexual maturity as early as four months, and a female cat can come into season multiple times per year, each season increasing the risk of mammary tumour development if she remains intact. The case for acting before the first season is compelling.
Cats adopted from rescue organisations are frequently spayed at eight to twelve weeks under early age neutering (EAN) protocols, which are endorsed by a number of European veterinary bodies for shelter contexts. Whilst not universal in private practice, EAN in rescue settings has a strong safety record.
The Population Control Imperative
Europe has a significant stray and feral cat problem. Estimates suggest tens of millions of feral cats across the Mediterranean region alone, with Spain, Italy, Greece, and Portugal all facing considerable welfare challenges as a result. A single unspayed female cat and her offspring can theoretically produce hundreds of descendants in just a few years.
Spaying owned cats is a direct contribution to reducing this crisis. Many municipalities across Spain and Italy operate trap-neuter-return (TNR) schemes for feral colonies, and responsible ownership of entire female cats is considered a welfare issue by most European veterinary associations.
Health Benefits of Spaying Your Cat
The health case for spaying is particularly strong in cats:
- Mammary tumour prevention: Feline mammary tumours are malignant in approximately 85–90% of cases — a far higher rate than in dogs. Spaying before the first season reduces the risk of mammary cancer by an estimated 91%, according to research cited by ISFM. Spaying after the first season reduces risk by around 86%, and after two seasons by 11%. The protection diminishes significantly with each subsequent season.
- Pyometra elimination: Pyometra is a serious and potentially fatal uterine infection seen in intact queens. It requires emergency surgery and, if untreated, is life-threatening. Spaying eliminates this risk entirely.
- Ovarian and uterine cancer prevention: Both are prevented by spaying.
- No phantom pregnancies: False pregnancy (pseudopregnancy) causes behavioural disturbance and physical discomfort in some queens and is prevented by spaying.
Behavioural Benefits
The behavioural changes following spaying in cats are generally very welcome:
- No calling or yowling: A queen in season can be extremely vocal, calling persistently day and night to attract a mate. This behaviour disappears entirely following spaying.
- Reduced roaming: Intact females will roam considerable distances when in season, increasing their risk of road traffic accidents and injuries from other cats.
- No season-related stress: Repeated seasons are physiologically demanding. Spayed cats typically have calmer, more settled temperaments.
Risks to Consider
Cat spaying is a routine and very safe procedure, but no surgery is without risk:
- Anaesthetic risk: Low in healthy young cats. Pre-operative assessment by a vet reduces this risk further.
- Weight gain: Spayed cats have reduced metabolic needs and are prone to weight gain if diet is not adjusted. Feeding a neutered-cat formula and monitoring body condition score from the time of spaying helps prevent obesity.
- Post-operative wound interference: Cats are agile and persistent. Keeping the wound protected until healing is complete requires vigilance from the owner.
Feline spay incontinence of the kind seen in some dogs is not a significant concern in cats. The procedure has a very favourable risk-benefit profile for the vast majority of healthy queens.
Pre-Operative Care
Your vet will typically advise:
- Fasting from food for 4–6 hours before surgery (shorter than dogs, as cats are more prone to hypoglycaemia)
- A clinical examination on the day to confirm the cat is healthy
- Blood tests may be offered, particularly for cats over three years of age or with any health concerns
Post-Operative Recovery
Cats typically recover more swiftly than dogs. Most are alert and eating within a few hours of returning home. Key care points include:
- An e-collar or recovery suit for 7–10 days to prevent licking or chewing the wound
- Keeping the cat indoors and calm during the recovery period
- Checking the wound daily for signs of infection or dehiscence
- A suture check at 7–10 days if non-absorbable sutures were used (many European vets now use absorbable intradermal sutures that do not require removal)
Cost of Spaying a Cat in Europe
Cat spaying is considerably more affordable than dog spaying due to the cat's smaller size. Approximate costs at standard veterinary clinics:
- Spain: €80–200
- France: €100–200
- Germany: €150–300
- Italy: €80–180
- United Kingdom: £100–250
Charitable organisations such as Cats Protection in the UK and their equivalents in Spain (Asociación Felina Española) and elsewhere often offer subsidised spaying for low-income pet owners. It is always worth enquiring.
The Bottom Line
For female cats, the evidence for spaying — and for doing so before the first season — is clear and consistent. The health and behavioural benefits are significant, the risks are low, and the contribution to addressing Europe's stray cat population is a genuine added value. If your cat is approaching four months of age and has not yet been spayed, a conversation with your vet should be your next step.
Article reviewed by Sarah Bennett, veterinary health writer. References: ISFM Feline Consensus Guidelines on Feline Neutering; WSAVA guidelines on neutering cats; RCVS Knowledge resources on elective feline procedures.