Last Updated: 04/06/2026
Desexing Your Cat: What to Expect Before, During and After
Thinking about desexing your cat but not sure where to start? We cover the best age to desex, what the procedure involves for male and female cats, typical costs in Australia, and what a normal recovery looks like.
Author: Dr Gillian Hill BVSc (Hons)
Reading Time: 4 minutes - short read
If you've just brought home a new kitten (or adopted a young adult cat), desexing is probably on your to-do list. It's one of those things most vets recommend early on, but it can feel a bit daunting if you're not sure what it actually involves.
Here's everything you need to know about desexing a cat, from the best age to book in, to what a normal recovery looks like.
When should you desex your cat?
Australian vets generally recommend desexing cats from around 4 to 6 months of age, before females come into their first heat cycle and before testosterone-driven behaviours develop in males. Some vets and shelters practise early-age desexing from as young as 8 weeks, which is safe and well-supported by the Australian Veterinary Association (AVA).
The short answer: the earlier, the better. Cats can reach sexual maturity faster than most owners expect (sometimes as early as 4 months), so it's worth booking in well before that window.
What does desexing involve?
The surgery is performed under general anaesthetic, so your cat will be dropped off in the morning and usually home the same afternoon.
For male cats (castration): A small incision is made to remove both testicles. It's a quick, straightforward procedure with minimal recovery time. No stitches are usually needed.
For female cats (spaying): A slightly more involved surgery where the ovaries and uterus are removed. Stitches are placed, and as cats are particularly adept at removing their incision line sutures, your vet may place intradermal sutures (within the skin) to prevent this from happening. Females will also need a bit more downtime than males.
After the procedure, many cats in Australia also receive a small tattoo on their ear as a permanent identifier that they've been desexed. It's standard practice and nothing to worry about (and is mandatory in Queensland and the ACT).
How much does desexing a cat cost?
Cat desexing costs vary a lot depending on your state, clinic, and whether your cat is male or female.
As a rough guide, expect to pay $130 to $300+ for a male and $245 to $600+ for a female - spaying costs more because it's a more involved surgery. Your vet may also charge extra for pre-anaesthetic bloodwork, extra pain relief if needed, or an Elizabethan collar (or cone).
If cost is a concern, check the RSPCA, your local council, or the National Desexing Network (NDN) for subsidised options. Concession card holders may qualify for significantly reduced pricing.
What to expect during recovery
Most cats bounce back quickly. Male cats in particular tend to bounce back surprisingly fast. Because castration is a minor procedure with no internal stitches, most males are back to their normal selves within a day or two.
For female cats, the first 24 hours are usually the groggiest. Here's what's normal:
- Sleeping a lot and seeming a bit "out of it" from the anaesthetic, particularly on the first night.
- A reduced appetite on the first night
- Some tenderness around the incision site
You'll need to keep the area clean, check the stitches daily, and stop your cat from licking the wound (this is where the cone earns its keep). Activity should be restricted for around 10 to 14 days to allow the incision to heal properly.
Call your vet if you notice any swelling, discharge, redness, or if your cat seems to be in pain or has a low appetite beyond the first day or two.
What changes after desexing?
In male cats, desexing often reduces roaming, urine spraying, and aggressive behaviour towards other cats. These are hormone-driven behaviours, so without the hormones, they tend to fade (though this isn't guaranteed, especially if the behaviours are already established). While rare in cats, neutering eliminates the risk of testicular cancer, and reduces the risk of prostatic problems.
In female cats, you'll no longer have to deal with heat cycles, which can be intense and stressful for both the cat and the household. Spaying also eliminates the risk of uterine and ovarian cancer, and pyometra (infected uterus), and significantly reduces the risk of mammary tumours (breast cancer).
Your cat's core personality, their playfulness, affection, and quirkiness, won't change. Desexed cats do have a tendency to gain weight more easily, so it' ideal to learn how to assess their body condition score, and consider switching to a 'light', low-fat, or indoor cat food if they start to gain too much weight.
Cat Desexing FAQs
Desexing is a routine, low-risk procedure that most Australian vets recommend early in a cat's life. It reduces unwanted behaviours, prevents unplanned litters, and has long-term health benefits too. Recovery is usually smooth, and most cats are back to their normal selves within a week.
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History
Our experts continually monitor the health and wellness space and we update our articles when new information becomes available.
Wed 3 Jun 2026
Written by Dr Gillian Hill BVSc (Hons)Dr Gillian Hill BVSc (Hons)
Veterinarian
Dr. Gillian graduated from the University of Sydney in 2005 with a Bachelor of Veterinary Science. She worked in a number of small animal clinics, before joining the Pet Circle Vet team in 2020. Dr. Gillian has special interests in ultrasonography, surgery and behaviour. Her favourite part of being a vet is being an advocate for the animals. She loves helping owners to make the best, evidence-based decisions for their pets, and seeing the beautiful bond that people have with their fur-babies.
