Castration, also called neutering, is the surgical removal of a male cat’s testicles.

It’s one of the most common operations we perform at Battersea Square Vets and brings lifelong health, behaviour, and welfare benefits for your cat.

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We recommend neutering most male cats unless there’s a specific reason not to (for example if you plan to breed).

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Why Castrate a Male Cat?

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1. Preventing Unwanted Litters

 

An unneutered male cat can mate with multiple females over a short period of time.

 

One unneutered tom could father hundreds of kittens in his lifetime, many of which may end up as strays or in rescue centres.

 

Neutering is the most effective way to help reduce the number of unwanted cats in our community.

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2. Reducing Risky Roaming

 

Entire male cats often travel far from home looking for females in season. This increases the chance of:

• Road traffic accidents

• Getting lost or trapped in garages, sheds, or other buildings

• Fighting with other cats (leading to abscesses, scarring, and disease)

 

Neutered males are generally more home-orientated and less likely to wander long distances.

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3. Calming Unwanted Behaviours

 

Castration can reduce:

• Urine spraying indoors and outdoors

• Strong odour in urine

• Aggressive behaviour towards other cats

• Territory marking and vocal calling at night

 

This often leads to a calmer, more relaxed cat and a more peaceful home life.

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4. Protecting Health

• Reduced risk of contracting Feline Immunodeficiency Virus (FIV), spread via bite wounds.

• Lower risk of abscesses and fight-related injuries.

• Prevention of testicular cancer (as the testicles are removed).

 

When is the Best Time to Neuter a Cat?

 

We generally recommend neutering from around four months of age. At this stage, your cat hasn’t yet developed most hormone-driven behaviours.

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However, it’s never “too late” adult cats can be neutered at any age, provided they’re healthy enough for an anaesthetic.

 

The Procedure: Step-by-Step

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1. Pre-operative check
Your cat will have a health check to ensure he’s fit for anaesthesia. We’ll discuss feeding instructions and answer any questions you may have.

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2. Anaesthetic
We use a short-acting general anaesthetic. Your cat will be carefully monitored by a trained nurse throughout the procedure.

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3. Surgery

• A small incision is made in the scrotum.

• The testicles are removed.

• Most castrations are performed without stitches, the small wounds usually heal on their own.

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4. Recovery
Your cat will wake up in a warm, quiet recovery area.

We’ll keep him until he’s fully awake and stable before sending him home.

 

Aftercare at Home

• Keep your cat indoors for 5–7 days after surgery to allow the wound to heal.

• Please use the pain relief prescribed by us, as cats often hide their discomfort.

• Check the surgical site daily for redness, swelling, or discharge.

• Use a soft recovery collar if your cat licks the wound, licking the wound can lead to infection.

• Avoid bathing or grooming near the surgery site until healing is complete.

 

Common Myths:

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• “It will make my cat fat.”
  Weight gain happens when calorie intake exceeds energy use. After neutering, cats may need slightly fewer calories, we can help you adjust his diet; we can also talk you though to to increase exercise and activity

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• “It will change his personality.”
  Castration may reduce aggression and roaming, but your cat’s affectionate, playful nature remains.

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• “It’s cruel.”
  On the contrary, neutering prevents injury, disease, and stress, improving quality of life.

 

Frequently Asked Questions

 

How long does cat castration take?
The surgery itself usually takes 5–10 minutes, but your cat will stay with us for several hours to allow for safe anaesthetic recovery.

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Will my cat need stitches?
Most male cats do not need stitches. The small wounds heal naturally within a week.

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Will he need to wear a cone?
Not always. If your cat leaves the area alone, a cone isn’t necessary. If he licks excessively, we recommend one.

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How long before I can let him outside again?
We recommend keeping him indoors for 5–7 days, or until the wound is fully healed.

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Is the procedure painful?
We use modern anaesthesia and pain relief. Most cats are back to their normal selves within 24–48 hours.

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Is it a key-hole procedure?

A cat castrate, like a cat spay and dog castrate is done via very small incisions, but this is different to a key-hole procedure that we use to neuter a female dog.

 

In Summary

Cat castration is a straightforward procedure with long-lasting health and welfare benefits.

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It’s quick, safe, and helps your cat live a calmer, healthier, and more settled life.

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