Important Medical Disclaimer: This article is educational and based on veterinary guidelines. Neutering and spaying are surgical procedures that require professional veterinary assessment. Always consult your veterinarian before scheduling the procedure, especially if your cat has any underlying health conditions.
You've brought home a kitten, and somewhere between the chaos of those first weeks, someone mentions you should get them neutered. You nod along. You know it's the right thing to do. But you're not entirely sure when, what it costs, or what happens afterwards.
This guide covers everything you actually need to know, from the right age to the recovery period, and what to watch for along the way.

What Is the Difference Between Neutering and Spaying?
In everyday language, people tend to say "neutering" for male cats and "spaying" for female cats. Technically, both procedures are a form of castration, meaning the reproductive organs are fully removed. In males, the testicles are removed. In females, the ovaries and sometimes the uterus are removed.
The key distinction is what sterilisation means in a clinical sense. True sterilisation only interrupts the fallopian tubes or vas deferens, leaving the hormones intact. This is rarely performed in the Netherlands because it doesn't resolve the hormonal behaviour that causes problems in the first place. What your vet will almost always perform is full castration, regardless of the term used.
It's worth knowing this because it explains why the procedure works so well. Removing the source of reproductive hormones is what changes the behaviour, reduces health risks, and prevents unwanted litters.
When Should You Have Your Cat Neutered or Spayed?
The general recommendation is to neuter or spay your cat between four and six months of age. This is around the time most cats start to reach sexual maturity, which can happen as early as five months in some breeds.
For female cats, the advice is to act before the first heat cycle if possible. A cat in heat is not comfortable, and the experience can repeat every two to three weeks during the season if she doesn't mate. Spaying before the first heat also significantly reduces the risk of mammary tumours later in life.
For male cats, neutering before they start spraying indoors is strongly advisable. Once spraying becomes a habit, it can continue even after the procedure. Early neutering removes the hormonal drive before it becomes established behaviour.
Your vet will assess your individual cat before confirming the right timing. Factors like breed, weight, and general health all play a role. Some larger breeds may benefit from waiting a little longer, and your vet is the best person to advise on this.
Breed does make a difference worth knowing about. Large and slow-maturing breeds such as the Maine Coon, Norwegian Forest Cat, and Ragdoll often reach full physical development later than average, and many vets recommend waiting until around six months or slightly beyond for these cats. Breeds with naturally compact builds, like the British Shorthair and Scottish Fold, typically follow the standard four to six month window without issue. More active, lean breeds such as the Devon Rex, Siamese, and Abyssinian tend to reach sexual maturity earlier, so prompt timing matters more. Whatever the breed, the principle stays the same: act before the first heat in females, and before spraying begins in males.

What Do Neutering and Spaying Cost in the Netherlands?
Cost is one of the most common questions, and it varies more than people expect. The price depends on the veterinary practice, the region, and whether your cat is male or female.
Neutering a Male Cat
Castrating a male cat is a relatively straightforward procedure. It's performed under general anaesthesia and usually takes around 15 to 20 minutes. Most cats can go home the same day. The cost typically falls between €80 and €150, depending on the practice.
Spaying a Female Cat
Spaying a female cat is a more involved procedure because it requires opening the abdominal cavity. It takes longer, uses more anaesthetic, and requires slightly more post-operative care. The cost is generally higher, ranging from €150 to €300 at most practices.
Some veterinary practices offer reduced rates for low-income households, and occasional castration projects are organised in various regions across the Netherlands. It's worth asking your local vet or animal shelter whether any support is available.
Pet insurance occasionally covers the cost of neutering or spaying. Check your policy details before assuming it doesn't apply.

What Happens During the Procedure?
Before the operation, your vet will carry out a pre-anaesthetic examination to check your cat's heart and lungs and confirm they're healthy enough for surgery. You'll be asked to withhold food from the evening before, though water is usually fine until a few hours before the appointment.
The procedure itself is performed under full general anaesthesia. For male cats, small incisions are made in the scrotum and the testicles are removed. The wounds are very small and often don't require stitches. For female cats, an incision is made in the abdomen or flank, and the ovaries and sometimes the uterus are removed and the wound is closed with sutures.
In most cases, your cat can come home the same day, a few hours after waking from the anaesthesia.
Recovery: What to Expect in the Days After
The first 24 to 48 hours after surgery are the most important. Your cat will likely be groggy, quieter than usual, and possibly a little unsteady on their feet. This is completely normal as the anaesthesia wears off.
Keep your cat indoors and in a calm, warm space for at least a week after the procedure. Limit jumping and rough play as much as possible, especially for female cats whose abdominal incision needs time to heal properly.
Check the wound once or twice a day. Some redness and slight swelling is expected in the first couple of days. What you want to avoid seeing is excessive swelling, discharge, or signs that your cat is persistently licking or biting at the wound.
For female cats recovering from spaying, a recovery suit is often more comfortable than a traditional cone. The Easy Recover Cat Recovery Suit covers the abdominal incision fully while allowing your cat to move, eat, and use the litter box without restriction. Most cats tolerate it much better than a collar.

For male cats, wound protection is simpler since the incision is smaller, but some cats will still try to investigate it. The Easy Recovery Flower Collar is a soft, flexible alternative to the hard plastic cone. It's comfortable enough for your cat to sleep in and still effective at keeping them away from the wound.
Stitches, if present, are usually removed after ten to fourteen days. Many vets now use dissolvable sutures that don't require removal at all.
Feeding After the Procedure
One important change after neutering or spaying is that your cat's metabolism will slow down. Their energy requirements drop by roughly 20 to 30 percent, while their appetite often increases. This combination makes weight gain a real risk if you continue feeding the same amounts.
Switching to a sterilised cat food formula after the procedure is a straightforward way to manage this. These foods are specifically designed with lower calorie density to match the changed metabolic needs without leaving your cat feeling underfed.

Why Neutering and Spaying Benefits Your Cat
Beyond preventing unwanted litters, the health benefits of neutering and spaying are significant. For female cats, spaying dramatically reduces the risk of mammary tumours and completely eliminates the risk of pyometra, a life-threatening uterine infection that affects unspayed females. Spayed females also tend to live longer on average than their unspayed counterparts.
For male cats, castration reduces the drive to roam, which in turn reduces the risk of road accidents, fights with other cats, and infections like FIV and FeLV that are transmitted through bite wounds. Neutered males are significantly less likely to spray indoors.
Neutered and spayed cats also tend to be calmer and more settled at home, without losing their personality or affection. The change is about removing the hormonal restlessness, not the character.

Frequently Asked Questions
Will my cat's personality change after being neutered or spayed?
The core personality of your cat won't change. What changes is the hormonal drive, so heat-related behaviours, spraying, and roaming will reduce or stop. Most owners find their cat becomes calmer and more affectionate.
Can I have my cat neutered at any age?
Yes, cats can be neutered at any age, but earlier is generally better for behavioural and health reasons. If you have an older unspayed female, the procedure is still worthwhile and your vet can assess the best approach.
Should I let my cat have one litter first?
There is no medical reason to let a cat have a litter before spaying. This is a common myth. Spaying before the first heat offers the greatest health protection.
Deciding to neuter or spay your cat is one of the most straightforward things you can do for their long-term health and wellbeing. The procedure is routine, recovery is quick, and the benefits last a lifetime. When in doubt, your vet is always the best starting point. 🐈
References
Licg. (n.d.). Castratie van uw kat. Retrieved from https://www.licg.nl/katten/castratie-van-uw-kat/
International Cat Care. (n.d.). Neutering your cat. Retrieved from https://icatcare.org/articles/neutering-your-cat
Royal Canin. (n.d.). Sterilisatie of castratie bij katten. Retrieved from https://www.royalcanin.nl/kittens/kennis-tips-voor-jouw-kitten/gezondheid/sterilisatie-of-castratie-bij-katten
AniCura Nederland. (n.d.). Castratie bij uw kat: alles wat u wilt weten. Retrieved from https://www.anicura.nl/behandelingen/kat/castratie-kat/