Neutering a Cat: Why, When & What to Expect

Vet-reviewed by Veterinary Reviewer, DVM · Last reviewed June 2026

Neutering cats prevents unwanted kittens and reduces roaming, fighting, spraying, and disease spread (like FIV and FeLV passed through bites and mating). Vets and welfare charities recommend neutering from around four months of age, before cats become sexually mature and start breeding.

Why neuter a cat?

Cats breed prolifically — a single unneutered pair and their offspring can produce huge numbers of kittens, fuelling the rescue crisis. Neutering also cuts the urge to roam and fight (reducing road accidents and abscesses), reduces territorial spraying, and lowers the spread of FIV and FeLV. In females it prevents pregnancy and reduces some reproductive cancers.

What’s the best age?

Modern guidance from UK cat charities is to neuter by around four months, because cats can get pregnant from about this age. Earlier neutering is safe and routine, and it’s far easier than dealing with an accidental litter.

Recovery

A quick day procedure for most cats. Keep them in and quiet for a day or two, watch the wound, prevent licking, and follow your vet’s post-op advice. Cats typically recover fast.

Related guides: How to care for a cat · Indoor vs outdoor cats

Frequently asked questions

At what age can a cat get pregnant?

From around four months — which is why early neutering is advised.

Does neutering change a cat's personality?

It reduces hormone-driven behaviours but doesn't change core personality.

Will my cat get fat after neutering?

Adjust food after neutering and keep up play to prevent weight gain.