Desexing

Why desexing matters 

Desexing helps prevent unwanted pregnancies, but it also offers important long-term health benefits for both male and female pets. For many animals, desexing can reduce the risk of serious health issues and support a calmer, healthier life. 

What does desexing involve? 

Female pets (Speying) 

Speying is the surgical removal of the uterus and ovaries and is performed under a full general anaesthetic. As well as preventing pregnancy, speying removes the risk of pyometra (a life-threatening uterine infection) and prevents ovarian and uterine cancers. It also significantly reduces the risk of mammary cancer later in life. 

Male pets (Castration) 

Castration involves the removal of both testicles and is a straightforward procedure when both testicles are descended. Castration prevents testicular cancer and can help reduce certain behaviours, such as roaming or aggression, depending on the age at which it’s performed. It’s important to note that male animals can still cause pregnancy for up to 60 days after surgery. 

When should my pet be desexed?

The recommended age for desexing varies depending on species, breed, size, and lifestyle. 

• Cats can be desexed from 8 weeks of age, provided they weigh over 1kg. We generally prefer to desex cats around 6 months of age, however this may change depending on pregnancy risk and time of year. 

• Dogs are typically desexed from around 6 months of age, though this may vary based on your dog’s size, breed, and activity level. 

We’re always happy to discuss the best timing for your pet and tailor recommendations to their individual needs. 

What’s included with desexing at Southwest Animal Hospital? 

Desexing is one of the most common procedures we perform, and your pet’s comfort and safety are always our priority. 

For all dogs and female cats, desexing includes:

• Pain relief before and after surgery, with additional medication to go home

• A full general anaesthetic, monitored by a qualified veterinary nurse throughout the procedure and recovery

• Intravenous fluids during surgery to help maintain blood pressure and support a safer anaesthetic

• An e-collar to prevent licking and reduce the risk of infection or stitch damage 

Male cats are castrated under anaesthetic but do not require a breathing tube due to the short duration of the procedure. They still receive appropriate pain relief and typically do not need an e-collar to go home.

Aftercare and follow-up

We recommend a free post-operative check with one of our qualified veterinary nurses 10–14 days after surgery to ensure your pet is healing well. If you have any concerns at any stage after surgery, please contact us we’re always happy to help and arrange a check if needed.