Neutering your cat: what you need to know
Whether and when to have a cat neutered is one of the most important decisions facing pet owners – and is often a source of uncertainty. Here is everything you need to know at a glance.
Your kitten rubs against your legs, purrs, eats well and is healthy – and suddenly you’re faced with a decision that many pet owners find difficult. Neutering – yes or no? When is the best time? Is the procedure dangerous, or, on the contrary: Important for the animal’s quality of life?
What happens during neutering?
To make this important decision, you first need to gather all the relevant information. Neutering involves the surgical removal of the reproductive organs. In female cats, these are the ovaries; in male cats, the testicles.
It may sound painful, but don’t worry: the procedure is performed under anaesthesia and is considered a routine operation in veterinary practice. While only a small incision is needed for male cats, the operation for female cats is somewhat more complex because the ovaries are removed through the abdominal wall.
Neutering vs sterilisation: what’s the difference?
In short: neutering involves the removal of the gonads (testicles or ovaries). The animal becomes infertile and behaves more calmly. This means that its hormonal balance is altered. During sterilisation, the sperm ducts or fallopian tubes are severed. The animal is infertile, but its sex drive remains intact because sex hormones continue to be produced.
In most cases, neutering is the standard procedure. Sterilisation is rarely used in practice, because the hormonal balance and thus, in many cases, being in heat for female cats or, in male cats, the sex drive, marking or mating behaviour, remains unchanged. This behaviour makes it difficult to care for cats.
However, you should discuss with your vet which solution is best.
Female cat vs male cat: anatomical differences
Most male cats recover more quickly after neutering than female cats because the procedure is generally less invasive and less stressful for them. This is due to anatomical differences.
Female animals have ovaries, a uterus and a vulva; male animals have testicles and a penis. In addition, male cats are often slightly larger and more muscular than females.
Benefits of neutering
From a human perspective, it’s natural to think that neutering might rob an animal of its joy in life because it eliminates sexuality.
However, this does not apply to cats. Many unneutered animals are more likely to suffer from the stress associated with hormonal behaviour, such as being in heat or intense territorial and mating behaviour.
“Neutering is definitely a good idea for both female and male cats. For cats that go outside, neutering prevents unwanted pregnancies and thus helps control the population. It is not uncommon for unwanted kittens to be killed, abandoned or taken to an animal shelter. It also reduces the risk of injuries from territorial fights among male cats,” says veterinarian Sonja Hermann.
But neutering is also advisable for indoor cats: “Neutered male cats are less likely to exhibit undesirable behaviours such as marking their territory, and for female cats, life without being constantly in heat is more relaxed.”
Further benefits
- Diseases of the reproductive organs can no longer develop
- Neutered animals are less likely to wander for kilometres. This reduces the risk of accidents, territorial disputes and the spread of disease
- Hormone-related conditions are less common
- On average, neutered cats live twice as long
Disadvantages of neutering
Cat neutering is a routine procedure in veterinary medicine, but it is permanent, often changes the cat’s personality and, like any operation performed under anaesthesia, carries a certain degree of risk.
The procedure is more complex for female cats than for male cats. Metabolism may also change after neutering: neutered cats are about three times more likely to develop obesity.
The reason: hormone levels and energy needs decrease, while appetite increases. This can increase the risk of diabetes. It is therefore essential to adjust the feeding routine after the procedure. Neutered male cats are particularly prone to developing urinary stones due to hormonal changes.
The right time: when should you neuter your cat?
The best time for neutering is usually between the fourth and eighth month of life – ideally before sexual maturity. The exact timing also depends on the breed. Smaller cats often reach sexual maturity earlier than larger, long-haired breeds.
As a rough guideline, a cat goes into heat for the first time when she has reached about 80% of her eventual adult weight.
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Cat
In female cats, failure to mate can cause them to be in heat repeatedly or permanently. Typical behaviour includes loud, plaintive meowing and frequent rubbing against legs or furniture. These episodes often recur every two to three weeks and are stressful for the animal.
In addition, the risk of uterine infections and certain types of cancer may increase. While outdoor cats often take a break in the winter because daylight hours are shorter, indoor cats may not experience this rest period due to artificial lighting.
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Male cat
Early neutering is also important for male cats, because if the procedure is performed too late, urine marking may continue even after neutering.
How is the procedure performed?
On the day of the procedure, the animal is brought to the clinic, examined again, and then anaesthetised. After preparing the surgical site, the vet removes the reproductive organs, closes the incision and monitors the cat in the recovery room.
In most cases, the cat can go home the same day. While the procedure for male cats is usually minor and straightforward, female cats require an abdominal incision, so the operation is somewhat more complex and postoperative care is more important.
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What do I need to keep in mind before the procedure?
It is important to follow the clinic’s instructions carefully: As a general rule, the animal should not eat anything for six to eight hours before the procedure; water is often still allowed. This is intended to prevent the animal from vomiting during anaesthesia.
If you have multiple cats, you should also plan ahead for the time after the operation and prepare a quiet, clean place for the cat to recover.
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How dangerous is anaesthesia?
Serious complications during anaesthesia are rare, but they cannot be completely ruled out. The risk is particularly high in animals with pre-existing heart, liver or kidney conditions, as well as in older animals or those in poor health.
Young cats generally tolerate anaesthesia better, and inhalation anaesthesia is often considered gentler.
“Anaesthesia carries a risk,” says veterinarian Sonja Hermann. “If the vet examines the cat thoroughly beforehand and monitors it closely during the procedure, risks can be identified and appropriate measures taken.”
Is there anything cat owners can do themselves to support their cats? “The best way to help your cat is really just to follow your vet’s instructions regarding preparation and aftercare,” says Hermann.
The surgical wound usually heals well. However, postoperative bleeding, wound healing complications or infection can occur in rare cases.
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What do I need to know about aftercare?
Keep the following in mind after the operation:
- Your pet needs rest and warmth
- Monitor the wound, behaviour and food intake
- Prevent the cat from licking the stitches, for example, by using a cone or a bodysuit.
- Administer pain relief and medication exactly as instructed
Watch out for these signs: “If the skin around the surgical wound is red, feels unusually warm or is swollen, this is a sign of inflammation. In this case, you should call the vet,” says Hermann.
Even though many cats seem to be back to normal after just a few days, the surgical wound usually takes 10 to 14 days to heal fully. During this time, the animal should not lick the wound or chew on the stitches, and should not be left alone for long periods if possible.
For cats that usually go outside, it’s best to keep them indoors for now. The stitches are usually removed after about ten days – after that, the cat can mostly resume its normal outdoor activities.
By the way: some animals may be irritable after surgery. This is usually because they are stressed from being at the vet’s, bothered by the lingering smell, in pain from the wound or experiencing a temporary hormonal imbalance.
There is really only one thing that helps: time. Give your pet space and quiet to recover. Tip: once your cat starts warming up to you again, play can help strengthen your bond and burn calories. Treat your pet to a new toy as a reward.
How much does it cost to have a pet neutered in Switzerland?
Prices vary depending on the veterinary practice. You should expect to pay around CHF 200 to 300 to have a female cat spayed; neutering a male cat costs about CHF 90 to 160.
What does pet insurance cover?
The amount of the cost share varies from provider to provider. Sanitas pet insurance helps cover the costs, so you don’t have to pay them all by yourself. Sonja Hermann explains: “In the Premium category of insurance, our pet insurance covers up to CHF 100 for neutering as part of preventive care.”
Dr Sonja Hermann is a veterinarian and has been working at Sanitas since February 2026 as a claims specialist in veterinary services. There, she is responsible for processing and reviewing complex claims, coordinating and communicating with external partners such as veterinary practices, and overseeing quality assurance and knowledge management within Sanitas pet insurance.
