Castrating Your Male Dog

Castrating your male dog is a surgical procedure to remove both testicles in male dogs that are not going to be used as stud dogs.

Castrating your male dog also prevents your dog from wandering to look for a mate, reduces your dog getting involved in fights, reduces unwanted sexual behaviour and prevents testicular cancer and helps prevent prostate disease.

Castrating your male dog

Before Surgery

Our vets will perform a thorough clinical exam on your pet to ensure that they are in good health and fit for surgery. A medical history will also be taken. Our vets will ask you about any pre-existing conditions, vaccinations status and any previous anaesthesia. As each pet is different we may decide to run a pre-anaesthetic blood test, which gives us a clear indication of your pet’s overall health. We advise that your dog is fasted from 8 pm the night before the operation to prevent reflux of the stomach contents entering the lungs (pulmonary aspiration of the stomach content).

About the Operation

The procedure is quick and carried out under general anaesthetic. A sedative and pain relief are given prior to surgery to make your dog comfortable and pain-free. An endotracheal tube is placed down your dog’s throat. This is attached to the anaesthetic machine which keeps your dog asleep during surgery. We will castrate your dog with a pre-scrotal incision to remove the testicles. The incision site is then closed in 3 layers, and your dog will have stitches on his skin. We will call you once he is recovered from surgery and he goes home with you the same evening.

When to Castrate your Dog

We recommend castrating your dog at 6 months of age. It can be done later in life, however, the risk of anaesthesia also increases as your dog gets older.

What are the risks?

With any type of surgical procedure, there is some risk involved. Our vet will carry out a health check the morning of the procedure to ensure your dog is healthy. Constant monitoring by our nurse during and after the surgery ensures these risks are as low as possible.

Going Home

After surgery, your dog’s appetite may be reduced and he may also appear quieter than usual; this is normal and he should be back to normal the following day. We will carry out a post-operative check after 3 days to make sure the wound is healing nicely and make sure there is no inflammation. He will need to have his stitches taken out 10-14 days after the surgery. Your pet will go home with a buster collar to prevent them licking at their stitches and it must stay on until the stitches are due out. However, if you are in any way worried about your dog don’t hesitate to contact us. You will need to keep your dog as quiet as possible while the stitches are in place.


  • Prevents your dog from wandering to look for a mate
  • Reduces your dog getting involved in fights
  • Reduces unwanted sexual behaviour
  • Prevents testicular cancer and prostate disease


Increased risk of weight gain so we recommend reducing his food by 10% after the procedure.

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