Desexing, and when it is the right age for your dog

Timing matters more than it used to. The evidence on large breeds now favours waiting for skeletal maturity, so the age we recommend for a labrador is different from the one we recommend for a jack russell.

2post-operative checks included

A vet in violet scrubs discussing a printed chart with an owner across a consult bench

What happens

  1. The consult before the day

    We weigh, examine and talk through the age question for your specific dog. Nothing is booked in that appointment, so you can go home and think about it.

    An owner and a vet talking over a printed chart with a dog standing between them
  2. Pre-anaesthetic bloods

    Run in our own lab the morning of the surgery. Kidney and liver values change what the anaesthetist uses, and the result is back before the pet is induced.

    A benchtop analyser in a small in-house laboratory with a sample loaded
  3. The surgery

    Full anaesthesia with a dedicated nurse monitoring, a warmed table, and pain relief on board before the first incision rather than after it.

    A veterinary nurse watching an anaesthetic monitor beside a draped surgical table
  4. Going home the same day

    Most pets go home between 4pm and 6pm with two days of pain relief and a printed set of instructions for the wound.

    A nurse handing a dog's lead back to an owner at a reception desk
  5. The check at three days and ten

    Both are included. The three-day check catches wound licking and swelling early, and the ten-day check is when the cone usually comes off.

    A vet examining a healing surgical wound on a dog's abdomen

Only on this page

Recommended age by adult body size

These figures are where our vets start. Behaviour, household and health can move any of them, which is what the consult beforehand is for.

Adult weightExample breedsFemaleMale
Under 10 kgJack russell, miniature poodle, most cats5 to 6 months5 to 6 months
10 to 20 kgCavoodle, beagle, staffy6 to 9 months6 to 9 months
20 to 30 kgKelpie, border collie, boxer9 to 12 months12 months
30 to 45 kgLabrador, german shepherd12 to 18 months18 months
Over 45 kgGreat dane, mastiff, rottweiler18 to 24 months18 to 24 months

Cats are the simple case. Five months, male and female, and the evidence has stayed steady on that for years.

What it costs

From $395cat spey

Dog prices run by weight. Every quote includes bloods, pain relief and both rechecks.

All consult fees

Questions we get asked

Will desexing calm my dog down?

It reduces roaming and some hormone-driven behaviour in males. Excitability, pulling and barking are training questions, and desexing moves them very little.

Will my pet gain weight?

Energy requirement drops by roughly a quarter afterwards. Feeding the same amount is what causes the gain, so we send you home with the new figure for your pet.

Is a keyhole spey available?

Laparoscopic speys run at Fremantle and Joondalup for dogs over 15 kg. They cost more and the recovery is shorter.

Can my dog be desexed while in season?

We wait three months. The tissue is heavily vascular during a season and the surgical risk is meaningfully higher.

How long is the recovery?

Quiet on a lead for ten days, with no off-lead running, swimming or baths. Most owners find days four to seven hardest, because the pet feels well before the wound has healed.

Book desexing

Available at Fremantle, Subiaco, Joondalup, Midland, Canning Vale, Rockingham.