Appropriate age for desexing dogs/cats

Rethinking the Timing of Desexing: What the Latest Research Says

For decades, neutering (or desexing) dogs in their first year of life has been considered routine — especially in the U.S., Australia, and much of Europe. The goal has been to reduce unwanted litters and certain reproductive diseases.

But new research is challenging the “one-size-fits-all” approach. It turns out that the timing of neutering can have a big impact on your dog’s long-term health — and the best age may depend on your dog’s breed, sex, and size.

What the Research Found

Scientists looked at over 30 breeds — including popular breeds like Golden Retrievers, Labradors, German Shepherds, and three sizes of Poodles — and followed them for rates of joint disorders and certain cancers.

Key findings:

Early neutering (before 6 months) was linked to higher risks of hip dysplasia, cruciate ligament injuries, and elbow dysplasia — especially in large breeds.

Golden Retrievers were particularly sensitive: females neutered at any age had higher rates of lymphoma, hemangiosarcoma, mast cell tumours, and osteosarcoma.

Small breeds generally showed no increased risk of joint disorders, and only Boston Terriers and Shih Tzus had increased cancer risk after neutering.

In most other breeds, there was no elevated risk if neutering was delayed to an age recommended for that breed and sex.

Why This Matters

Joint disease and cancer can be life-changing — even life-shortening — for dogs. Rethinking when (or if) to desex can help reduce those risks, especially for large-breed dogs.

My Approach

As an integrative veterinarian, I don’t take a one-size-fits-all approach. I look at:

Your dog’s breed and genetic risk profile

Their growth stage and skeletal maturity

Their lifestyle and behaviour

Your family’s ability to manage an intact dog safely

Then I help you choose the timing — or alternative strategies — that keep your dog healthiest long term.

Takeaway

Desexing is worth discussing, especially establishing what age your pet can be desexed to ensure the least harm done. For many breeds, waiting until your dog is physically mature may lower the risk of joint problems and cancers.

If you’re thinking about desexing your puppy, or wondering about the safest timing for your dog, book a consultation. Together, we can create a plan that balances health, behaviour, and lifestyle — for the best possible long-term outcome.

📧 Book an appointment: info@theintegratedvet.com.au

🌐 Learn more: theintegratedvet.com.auFor decades, neutering (or desexing) dogs in their first year of life has been considered routine — especially in the U.S., Australia, and much of Europe. The goal has been to reduce unwanted litters and certain reproductive diseases.