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Desexing your cat is more important than you may think

If you share your home with a cat, you already know how much personality can fit into their small, furry body. But along with the many joys cat guardianship brings comes significant responsibility, and one of the most important decisions you’ll make for your feline companion is whether to have them desexed.

RSPCA Australia
Tuesday, 19 May 2026

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Desexing your cat is a simple, routine procedure, but its impact stretches far beyond the individual animal, supporting a healthier life, reducing the risk of unplanned litters, safeguarding local wildlife and aiding in reducing the number of unowned cats in the community.

Responsible care starts with you

Desexing your cat is an essential part of responsible cat guardianship. Cats can reach sexual maturity as early as four months of age, meaning very young cats are capable of producing litters if left undesexed. For male cats, the desexing procedure (often referred to as castration) involves removing the testicles, while for females it usually means removing the ovaries and sometimes the uterus. Although it may sound significant, desexing is a routine procedure and when carried out at the recommended younger age of before 16 weeks, recovery is generally shorter.

One of the strongest reasons to desex your cat relates to the issue of overpopulation. Without intervention, one individual cat can contribute to multiple litters in a short period of time. Across Australia, litters resulting from undesexed cats have led to a significant proportion of unplanned kittens ending in rescue centres each year, with many more ending up abandoned and contributing to the number of growing cat colonies in urban and rural areas. Many of these animals will unfortunately struggle to find homes, placing enormous pressure on rescue organisations. Choosing to desex your cat has a direct impact on breaking this cycle and reduces the number of cats experiencing abandonment, neglect, and in some cases, euthanasia.

Healthier, happier lives

The benefits for individual cats are just as important. Desexing reduces the risk of certain diseases, particularly in females, where early desexing can lower the chances of developing mammary cancer. It also removes the possibility of complications associated with pregnancy and birth, which can sometimes be life threatening. Male cats benefit as well, with a lower risk of injuries or infections that may occur when they roam or engage in fights with other cats while in search for a mate.

Reducing undesirable behaviours is another compelling factor. Cat’s driven by reproductive hormones can display behaviours that are difficult to manage, such as loud yowling, restlessness, spraying, and attempts to escape home to roam. These instincts can put them at risk of illness or injury, especially if they wander into unsafe environments or encounter other animals. Undesexed roaming cats also pose a significant threat to local wildlife, as a roaming cat can hunt up to six species in one night alone. After desexing, many of these behaviours are reduced or disappear altogether, often resulting in a calmer, more content companion.

Prevention equals protection

Ultimately, by choosing to desex your cat you can protect what matters most. Supporting the health and wellbeing of your cat, preventing suffering associated with unplanned litters, and contributing to a more sustainable and humane future for cats in the community.

While any surgery involves some degree of risk, desexing is a very common and well-understood procedure, with lifelong benefits that far outweigh the small, short-term risks. Choosing to desex is giving your cat the best chance at a long and healthy life with you and reflects the responsible care that every animal deserves. Your veterinarian will be able to advise the best timing and approach to desexing your cat based on their individual needs.

Knowledgebase • Offsite

Why should I have my cat desexed?

Desexing cats before they can reproduce plays an integral role in reducing cat overpopulation and there are also many health and welfare benefits for individual cats.

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RSPCA Australia 9 July 2021

Do the right thing by your cat and the community

desexing pre-pubertal desexing pet care cats

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Desexing your cat is more important than you may think

Responsible care starts with you

Healthier, happier lives

Prevention equals protection

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