Desexing your Dog

De-sexing or neutering your dog is a surgical procedure that prevents them from being able to reproduce. In male dogs it is commonly referred to as “castration”, and in female dogs as “spaying”. This is the most frequent surgery performed by our vets, and generally your dog is home by the evening of surgery.

The most common age to de-sex your dog is between 5 and 6 months, however there has been a large study done with certain dog breeds, which has shown that they can be more susceptible to getting or developing certain problems/diseases if they are de-sexed to soon. If you're concerned or confused about when to de-sex your dog, please ask your vet during your appointment or give us a call on 9744 3611, we are happy to discuss this with you.

There are many benefits to de-sexing your dog. They include:

  • Preventing unwanted litters, which can be very costly, and may add to the already overwhelming number of stray animals that are put down each year
  • Prevention of testicular cancer and prostate disease in males, and it can help prevent pyometra (infection of the uterus) and mammary tumours (breast cancer) in females
  • Stopping the “heat” cycle in females 
  • Decreasing aggression towards humans and other animals, especially in males
  • Being less prone to wander, especially in males
  • Reduction of council registration fees

Common questions about desexing

“Will de-sexing affect my pet’s personality?”
Your pet will retain their pre-operation personality, possibly with the added bonus of being calmer and less aggressive.

“Should my female have one litter first?”
No – it is actually better for her not to have any litters before being spayed. Her risk of developing breast cancer increases if she is allowed to go through her first heat.

“Will it cause my pet to become fat?”
Your pet’s metabolism may be slowed due to hormonal changes after desexing,however this is easily managed with adjusting feeding and ensuring adequate exercise. There is no reason a de-sexed pet cannot be maintained at a normal weight.

“Is de-sexing painful?”
As with all surgery, there is some tenderness immediately after the procedure, but most pets will recover very quickly. We administer pain relief prior to surgery and after surgery too.  In many cases, your pet will likely need some encouragement to take it easy!

“Will my dog lose its “guard dog” instinct?”
No, your dog will be just as protective of their territory as before the surgery.

What to do before and after surgery

Before surgery:

  • Make a booking for your dogs operation.
  • Wash them the day before surgery as they are unable to be washed until the surgery wound has healed (1-2 weeks).
  • Do not give your dog food after 8pm the night before the operation, however they can keep their water overnight to be taken away in the morning.
  • A blood test may be performed prior to surgery to check vital organ function.
  • The vet will perform a thorough physical examination before administering an anaesthetic.
  • All dogs will require intravenous fluid support during surgery. This will be discussed with you prior to the procedure.

After Surgery:

  • Keep your dog restrained and quiet as the effects of anaesthetic can take some time to wear off completely.
  • Keeping them quiet is also essential to allow the wound to heal.
  • Food and water should be limited to small portions only on the night after surgery.
  • Follow any dietary instructions that the vet has provided.
  • Ensure all post-surgical medications (if any) are administered as per the label instructions.
  • Ensure your dog’s rest area is clean to avoid infection.
  • Check the incision at least twice daily for any signs of infection or disruption (eg. bleeding, swelling, redness or discharge). Contact the vet immediately if these symptoms appear. Do not wait to see if they will spontaneously resolve.
  • Prevent your dog from licking or chewing the wound. Special cone-shaped collars assist with this problem.


If you have any concerns before or after your dog has been de-sexed, please call us immediately to discuss.