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Neutering for Cats

Neutering means surgically preventing cats from reproducing. In males, the operation is called castration and in females it’s called spaying.

With castration both testicles are removed which takes away the main source of the male hormone testosterone. With spaying, both the ovaries and the uterus are removed which means the female is unable to become pregnant.

Both operations are carried out under general anaesthetic. Every surgical procedure has some risk but modern techniques are very safe. Because it involves surgery, there will be some discomfort but cats are given drugs to control this and most of them are up and about just a few hours after they’ve had their operation.

We recommend neutering between five and six months and it’s quite safe to neuter older cats.

There are lots of reasons why neutering is a good idea.

For male cats:

For female cats:

For you:

For feline-kind:


What happens after the surgery?

Some people worry that their cat’s personality will change. This isn’t true but you might see a fall in certain behaviour – roaming, mounting, fighting or spraying urine.

The operation itself is carried out as a day procedure. Your pet is admitted in the morning and the surgery is carried out during the morning. We monitor your pet’s recovery to ensure they come around well after the anaesthesia, and they are discharged during the evening clinic. Male cats don’t have any stitches, and are given a long-lasting painkiller on the day of the operation, so there is no need for a revisit unless you have any concerns. With female cats, there will be one or two stitches on her flank, so we will do a wound check two days after the operation, and remove the stitches after ten days.

People also worry that their pet will get fat. Neutered animals might have slightly lower food requirements so we recommend switching to food specifically designed for neutered cats after the operation.