Spaying (in females) and neutering or castration (in males) are among the most common surgeries carried out on cats and dogs. They prevent unwanted litters and remove or reduce several health and behaviour problems linked to the reproductive system.
Every case is assessed individually before surgery is recommended. What follows is general guidance, not a substitute for an examination.
Why owners choose to spay or neuter
- No unwanted litters, and no need to manage a pet in heat at home
- In females, removal of the risk of pyometra (a life-threatening womb infection) and reduced risk of mammary tumours when done early
- In males, removal of testicular disease risk and reduced prostate problems with age
- Less roaming, urine marking, and fighting linked to mating behaviour
When it is usually done
Timing depends on species, breed, size and the individual animal's health. Cats are commonly neutered once they reach a suitable weight and maturity; large-breed dogs are often given more time to finish growing. The right age for your pet is decided at the pre-surgical consultation, not by a fixed rule.
Before surgery
- A pre-anaesthetic examination, and any tests the veterinarian considers necessary
- Fasting instructions given to you for your specific pet — do not fast a young kitten or puppy without instruction
- Water usually allowed until a stated time
- A discussion of the procedure, the anaesthetic, and the aftercare you will need to provide
Recovery at home
- Day 0–1: drowsiness is normal; keep your pet warm, quiet and confined, and offer a small light meal only when advised
- Day 1–3: appetite and alertness return; give pain relief and any antibiotics exactly as prescribed
- Day 3–10: keep the incision dry and clean, prevent licking with a collar, and restrict jumping, running and stairs
- Report immediately: swelling, discharge, bleeding, a reopened wound, refusal to eat, vomiting, or lethargy that worsens
Common worries
Neutering does not, by itself, make a pet fat — reduced energy needs after surgery do, so portions are adjusted afterwards. It also does not remove trained behaviour or a pet's personality; it reduces behaviours driven by hormones.
Frequently asked questions
- How long does a spay or neuter take?
- The surgery itself is usually short, but your pet needs time for anaesthetic induction and recovery. Plan for your pet to spend part of the day at the hospital.
- Is my pet in pain afterwards?
- Pain relief is part of the plan. Give the medicines exactly as prescribed and never give human painkillers — several are toxic to cats and dogs.
- Can an older pet still be spayed or neutered?
- Often yes, after an examination and any tests needed to assess anaesthetic risk. Book a surgical consultation and the options will be explained.