What Does Spaying a Cat Mean?
Spaying refers to the surgical removal of a female cat's reproductive organs to prevent her from reproducing and to eliminate the hormonal cycles associated with being intact. Two surgical approaches are used in veterinary practice across Europe.
The traditional procedure, known as ovariohysterectomy, involves the removal of both the ovaries and the uterus. This has been the standard approach in the UK and Ireland for many years. An increasingly preferred alternative, particularly in continental Europe and in progressive UK practices, is ovariectomy — the removal of the ovaries only, leaving the uterus in place. Evidence shows that ovariectomy achieves the same health outcomes as ovariohysterectomy in cats, with a slightly shorter surgery time and recovery period. As long as the ovaries are removed, the risk of subsequent uterine disease is effectively eliminated because the hormonal stimulus that drives uterine problems is gone.
When Should a Cat Be Spayed?
The traditionally recommended age for spaying cats in the UK has been five to six months — before the first heat cycle. This remains common advice in general practice. However, current guidance from organisations including the International Society of Feline Medicine (ISFM) and the British Small Animal Veterinary Association (BSAVA) now supports paediatric or early-age neutering from four months in appropriate settings, particularly in rescue and rehoming environments where preventing reproduction is an immediate priority.
Spaying before the first season offers the greatest health benefits, particularly in terms of mammary tumour prevention (discussed below). Cats can come into season as early as four months of age, and once a cat has experienced her first heat cycle the associated health benefits of spaying, while still significant, are somewhat reduced compared with pre-season spaying.
Cats can be spayed while in season, though some surgeons prefer to wait a few weeks after a season has finished if it is not urgent, as the blood supply to the reproductive organs is increased during oestrus. Your vet will advise based on your cat's individual circumstances.
Health Benefits of Spaying
The health case for spaying cats is compelling, and the benefits go well beyond preventing unwanted pregnancies.
Elimination of Pyometra Risk
Pyometra is a life-threatening infection of the uterus that is one of the most common serious illnesses seen in intact older female cats. It occurs when the uterus fills with pus, typically under hormonal influence following repeated oestrus cycles without conception. There are two forms: open pyometra, in which the cervix remains open and purulent discharge is visible, and closed pyometra, in which the cervix is closed and the uterus distends with trapped infection — a more immediately dangerous situation as there is no outlet for the pus.
Signs include lethargy, loss of appetite, increased thirst and urination, vomiting, and in open cases, vaginal discharge. Emergency surgery to remove the infected uterus is the definitive treatment and carries a higher anaesthetic and surgical risk than routine neutering in a healthy cat. A spayed cat cannot develop pyometra. It is entirely preventable by removing the reproductive organs.
Near Elimination of Mammary Tumour Risk
In cats, approximately 85 to 90 percent of mammary (breast) tumours are malignant. This is a significantly higher proportion than in dogs and means that mammary tumours in cats are a serious oncological concern. The risk of mammary tumour development is strongly influenced by exposure to oestrogen over time. Spaying a cat before her first season reduces the risk of mammary tumours to near zero. Spaying before the second season still confers significant risk reduction, though less dramatic. Spaying after two or more seasons still has health benefits in terms of preventing pyometra and uterine cancer, but the protective effect on mammary tissue is less pronounced.
This is one of the strongest arguments for early spaying — it is genuinely cancer-preventive in a species where the disease is aggressive and difficult to treat.
Behavioural and Quality of Life Benefits
Intact female cats that are not allowed to mate will cycle repeatedly, coming into season every few weeks during the breeding season (typically late winter through to autumn). During oestrus, cats can be highly vocal — calling loudly and persistently, sometimes through the night. They may spray urine to attract mates and may attempt to escape to find a male. These behaviours are distressing for both the cat and her owner and cease entirely after spaying.
Risks of Spaying
Spaying is a routine surgical procedure performed under general anaesthesia, and as with any anaesthetic and surgical intervention, there are risks. In a healthy young cat, the anaesthetic risk is very low. The most commonly encountered complications in the long term are:
- Weight gain — the metabolic rate of a spayed cat falls by approximately 20 percent following surgery, meaning food intake needs to be reduced to maintain a healthy weight. Transition to a post-neutering diet formulated for altered cats is recommended.
- Urinary incontinence — while this is a recognised complication of spaying in dogs, it is rare in cats and should not be a significant concern for most owners
- Wound complications — breakdown of the incision, infection, or hernia are uncommon but possible. Following post-operative care instructions closely minimises these risks.
Post-Operative Care
After surgery, your cat will need a period of rest and restricted activity to allow the incision site to heal properly. The following guidelines apply in most cases, though your vet's specific instructions always take priority:
- Restrict activity for seven to ten days — no jumping, running, or climbing
- An Elizabethan collar (e-collar) or a recovery suit should be worn to prevent the cat from licking or chewing the wound. Cats that interfere with their wound can cause serious complications.
- Keep the cat indoors for the recovery period
- Check the wound daily for signs of swelling, redness, discharge, or the wound opening
- Return to the clinic at around ten days for a wound check and to confirm healing
- Contact your vet promptly if the cat is lethargic beyond 24 to 48 hours post-surgery, is not eating, is showing signs of pain, or if you have any concerns about the wound
Cost of Spaying Across Europe
The cost of spaying varies considerably depending on country, region, and type of practice. In the UK, spaying a cat typically costs between 150 and 400 pounds, with prices generally higher in London and the South East and lower in other regions. Veterinary costs in many continental European countries tend to be lower, though this varies greatly by country and urban versus rural location.
Charitable organisations in the UK offer subsidised neutering for owners who meet certain eligibility criteria. Cats Protection runs neutering assistance schemes in many areas of the UK, as does the RSPCA and a number of smaller local charities. It is worth contacting these organisations directly if cost is a barrier, as schemes and eligibility vary by area.
Spaying and the Wider Cat Population
Beyond the individual health benefits, neutering is a cornerstone of responsible cat ownership and of efforts to manage the welfare of stray and feral cat populations across Europe. Uncontrolled reproduction in domestic and feral cat populations contributes to significant animal welfare problems. Trap-Neuter-Return (TNR) programmes, in which feral cats are humanely trapped, neutered, and returned to their territory to live out their natural lives, are used across the European Union and the UK as a more humane and effective alternative to culling.
By spaying your own cat, you are not only protecting her individual health — you are also playing a part in reducing pressure on rehoming organisations and preventing unnecessary suffering in unwanted kittens.