Why Desexing Your Pet Matters | Health, Behaviour & Unwanted Litters

Desexing your pet is one of the most important decisions you can make for their long-term health, welfare and responsible care.

Pets are a lifelong commitment. Maybe not always for our entire life, but certainly for theirs.

One of the most practical ways pet owners can support their animal’s wellbeing — while also helping reduce the number of unwanted animals entering shelters — is by desexing their pets.

Desexing, also known as spaying or neutering, is a routine veterinary procedure that prevents animals from breeding. It is commonly performed on cats and dogs, but may also be relevant for some other companion animals depending on species and circumstances.

If you are unsure whether desexing is right for your pet, your veterinarian is the best person to talk to. They can advise you based on your pet’s age, breed, health, lifestyle and individual needs.

What Does Desexing Mean?

Desexing is a surgical procedure performed by a veterinarian to prevent an animal from reproducing.

In female animals, desexing is often called spaying.

In male animals, it is often called neutering or castration.

The exact procedure and timing can vary depending on the species, size, age and health of your pet, so it is always best to speak with your vet about the most appropriate plan.

Why Should You Desex Your Pet?

There are several reasons desexing is recommended for many pets.

Desexing can help:

prevent accidental litters
reduce the number of unwanted animals
support long-term health
reduce some hormonally driven behaviours
make pet ownership easier and safer in some situations

Every pet is different, and there may be individual factors to consider, but for many cats and dogs, desexing is an important part of responsible pet ownership.

Preventing Unwanted Litters

Accidental litters are one of the biggest reasons pets end up homeless, surrendered or placed under pressure in rescue systems.

Even one unexpected litter can quickly become difficult to manage.

Puppies and kittens need:

safe housing
feeding
worming
vaccinations
microchipping
vet checks
appropriate homes
responsible rehoming

Finding good homes is not always as easy as it sounds, especially when many shelters and rescue groups are already stretched.

Desexing helps prevent unplanned breeding and reduces the number of animals needing homes.

Health Benefits of Desexing

Desexing can also have important health benefits.

For female pets, desexing can reduce the risk of some reproductive health issues, including uterine infections such as pyometra. RSPCA Australia notes that desexed animals are generally less likely to suffer from certain diseases and illnesses, including uterine infections and some cancers in females, and prostate problems in males.

For male pets, desexing may reduce the risk of some reproductive and hormone-related conditions.

Health benefits depend on species, age and individual circumstances, so your vet can help you weigh up the best timing and approach for your pet.

Behaviour Benefits of Desexing

Desexing may help reduce some hormonally driven behaviours.

Depending on the animal, this may include:

roaming to find a mate
urine marking
some forms of mounting behaviour
calling or yowling in cats
frustration linked to breeding urges
some types of aggression or competition

It is important to be realistic, though. Desexing is not a magic behaviour fix.

Training, enrichment, exercise, environment, socialisation and health all play major roles in behaviour too.

If your pet is showing concerning behaviour, speak with your vet or a qualified animal behaviour professional.

When Should Pets Be Desexed?

The best age to desex a pet depends on the animal.

Your veterinarian may consider:

species
breed
size
age
weight
health status
lifestyle
risk of accidental breeding
current behaviour
household situation

Cats and dogs may have different recommendations, and large-breed dogs may need different timing discussions compared with small dogs.

Rather than relying on a single rule for every pet, it is best to ask your vet what timing is safest and most appropriate.

Is Desexing Only for Cats and Dogs?

Cats and dogs are the most commonly discussed pets when it comes to desexing, but other animals may also need reproductive management.

This can include some rabbits, guinea pigs, rats and other small animals, depending on species and housing arrangements.

Not every animal is desexed routinely, and not every vet performs surgery on every species.

If you keep small animals, ask an experienced exotic or small animal vet for advice before housing males and females together.

What About Breeding Pets Responsibly?

Breeding animals is a serious responsibility.

Responsible breeding involves much more than simply allowing two animals to have babies.

It requires:

species knowledge
health screening
genetic awareness
suitable housing
emergency vet planning
time and experience
responsible homes lined up
lifetime responsibility for the animals produced

If you are not intentionally, ethically and responsibly breeding, desexing is usually the safer and more responsible choice.

What Is National Desexing Month?

National Desexing Month is an Australian campaign that encourages pet owners to desex their pets and helps promote access to more affordable desexing options.

The National Desexing Network provides an Australia-wide referral system to help pet owners in financial need access low-cost desexing options.

July is commonly promoted as National Desexing Month in Australia, and some participating veterinary clinics may offer discounted desexing during campaign periods.

If cost is a barrier, it is worth checking whether low-cost desexing support, local council programs, rescue partnerships or participating vets are available in your area.

How to Find Low-Cost Desexing Options

If you need help finding affordable desexing, the National Desexing Network has a desexing directory where pet owners can search by suburb and state for listed programs and participating vets.

You can also ask:

your local vet clinic
local council
RSPCA services in your state
animal rescue groups
community pet support programs

Availability can vary by location and time of year, so it is worth checking regularly if you do not find an option straight away.

Common Desexing Myths

“My pet should have one litter first.”

Pets do not need to have a litter before being desexed.

In many cases, allowing a pet to have a litter increases responsibility, costs and health risks without any benefit to the animal.

“My pet will get fat after desexing.”

Desexing can affect metabolism, but weight gain is not automatic.

Diet, portion sizes, exercise and enrichment all matter.

“Desexing will change my pet’s personality.”

Desexing does not remove your pet’s personality.

Your pet will still be themselves. Some hormonally driven behaviours may reduce, but their bond with you, preferences and individual quirks remain.

“I’ll easily find homes for the babies.”

Good homes are not always easy to find, and shelters are often already caring for unwanted litters.

Responsible rehoming takes time, screening and long-term commitment.

Desexing Helps Pets and the Community

Desexing is not just about preventing babies.

It can support:

healthier pets
fewer unwanted litters
less pressure on shelters and rescue groups
fewer animals being dumped or surrendered
more responsible pet ownership

It is one of the simplest ways pet owners can make a positive difference for both their own animals and the wider community.

Speak With Your Vet

Every pet is an individual.

Before making decisions about desexing, speak with your veterinarian. They can help you understand the best timing, procedure, recovery process and any special considerations for your pet.

At Aquabird Pet Centre, we support responsible pet ownership and encourage pet owners to seek trusted veterinary advice when making health decisions for their animals.

Why Desexing Your Pet Matters: Health, Behaviour and Preventing Unwanted Litters