What Is Spaying and Why Does It Matter?
Spaying — the surgical sterilisation of a female dog — is one of the most frequently performed veterinary procedures in Europe. Beyond population control, it carries meaningful health benefits when timed appropriately. However, deciding when and how to spay your dog is not as straightforward as it once seemed, and guidance from both the BSAVA (British Small Animal Veterinary Association) and the WSAVA (World Small Animal Veterinary Association) has evolved considerably in recent years.
Ovariohysterectomy vs Ovariectomy: What European Vets Prefer
There are two main surgical approaches to spaying. The traditional method, known as ovariohysterectomy (OHE), removes both the ovaries and the uterus. A newer and increasingly preferred technique in continental Europe is ovariectomy (OE), which removes only the ovaries whilst leaving the uterus in place.
Studies comparing the two procedures — including those referenced in WSAVA guidelines — show that ovariectomy is equally effective at preventing hormone-related conditions and carries a shorter operative time with less tissue handling. In Spain, Germany, France, and the Netherlands, ovariectomy is now the standard approach, particularly when performed laparoscopically. UK vets, guided by RCVS (Royal College of Veterinary Surgeons) continuing professional development, have been slower to adopt it but the shift is underway.
Laparoscopic vs Open Surgery
Laparoscopic (keyhole) spaying involves two or three small incisions and the use of a camera and instruments to remove the ovaries. It results in significantly less post-operative pain, faster recovery, and smaller wounds compared to open surgery. The technique is well established in Germany and the Netherlands and increasingly available across Spain and France.
The downside is cost: laparoscopic procedures typically add €100–200 to the overall bill. For healthy young dogs with no complications, many specialists consider it worth the premium. For dogs with uterine pathology, open surgery with full ovariohysterectomy may still be recommended.
When Should You Spay? The Timing Debate
This is where professional opinion has become more nuanced. Historically, vets recommended spaying at around six months — before the first season. Whilst this remains the recommendation for cats, the picture for dogs is more complicated, particularly for larger and giant breeds.
Research highlighted by WSAVA and the BSAVA now suggests that for large and giant breeds, early neutering (before 12 months) may increase the risk of certain orthopaedic conditions, including cruciate ligament disease and hip dysplasia, as well as some forms of cancer. This is because the sex hormones play a role in bone and joint development.
- Small breeds (under 10 kg): Spaying before the first season or shortly after remains appropriate and carries a very low risk of complications.
- Medium breeds (10–25 kg): Most guidelines suggest spaying after the first season, typically around 6–9 months.
- Large and giant breeds (over 25 kg): Current BSAVA-aligned guidance recommends waiting until skeletal maturity — often 12–18 months — before spaying.
Your vet will assess your individual dog's breed, lifestyle, and health status before making a recommendation. It is always worth asking about the evidence base for timing in your specific breed.
Health Benefits of Spaying
When timed appropriately, spaying offers genuine and well-documented health advantages:
- Pyometra prevention: Pyometra is a life-threatening uterine infection affecting up to 25% of intact female dogs by age ten. Spaying eliminates this risk entirely.
- Mammary tumour reduction: Spaying before the first season reduces the risk of mammary tumours by approximately 99.5%, according to longstanding studies. Spaying after the first season still provides significant protection, though the benefit diminishes with each subsequent season.
- Elimination of reproductive cancers: Ovarian and uterine cancers, whilst less common than mammary tumours, are completely prevented by spaying.
- No unwanted pregnancies or seasons: Seasons can be disruptive and, for some dogs, accompanied by false pregnancies and associated behavioural distress.
Risks to Be Aware Of
Spaying is major surgery and honest risk assessment matters. The main risks include:
- Anaesthetic risk: Any procedure requiring general anaesthesia carries a small risk. Pre-operative blood tests significantly reduce this risk by identifying underlying conditions.
- Urinary sphincter mechanism incompetence (USMI): Commonly called spay incontinence, this condition causes urinary leakage in an estimated 5–20% of spayed bitches, particularly large breeds spayed at a young age. It is usually manageable with medication but can become a lifelong consideration.
- Weight gain: Metabolic changes following spaying mean that many dogs require a reduction in caloric intake. This is manageable but requires dietary adjustment.
- Coat changes: Some breeds, particularly spaniels and retrievers, may develop coat texture changes after spaying.
Pre-Operative Care
Before surgery, your vet will typically recommend:
- A pre-anaesthetic blood panel to assess liver and kidney function and check for anaemia
- Fasting from food for 8–12 hours before surgery (water is usually permitted until a few hours before)
- A clinical examination to confirm the dog is in good general health
Post-Operative Recovery
Recovery from an open spay typically takes 10–14 days. During this period:
- An Elizabethan collar (e-collar) or recovery suit must be worn at all times to prevent licking the wound
- Exercise should be restricted to short, lead-only toilet walks
- The wound should be checked daily for signs of redness, swelling, or discharge
- A suture check with your vet is usually scheduled at 7–10 days post-operatively
Laparoscopic spaying typically allows a shorter recovery of 5–7 days due to the smaller incisions and reduced tissue trauma.
Cost of Spaying in Europe
Costs vary considerably by country, region, clinic type, and the size of your dog. The following are approximate ranges for open surgery in a standard veterinary clinic:
- Spain: €150–350
- France: €200–400
- Germany: €300–600
- Italy: €150–350
- United Kingdom: £200–500
Laparoscopic procedures add approximately €100–200 to these figures. Many charities and subsidised clinics across Spain and Italy offer significantly reduced rates for rescue organisations and low-income pet owners.
Making the Decision
Spaying is a personal decision that should be made in conversation with a vet who knows your dog. The benefits are real and well-evidenced, but so are the considerations around timing. Avoid blanket advice from online forums and instead seek a breed-specific, size-informed discussion. The procedure, when performed at the right time by a qualified surgeon, remains one of the most beneficial preventive health interventions available for female dogs.
Article reviewed by Julia Wrenfield, veterinary health writer. References: WSAVA Spay/Neuter Task Force guidelines; BSAVA position statement on neutering timing; RCVS Knowledge resources on elective procedures.