Choosing the best method for spaying your female dog is a decision that should be based on an understanding of the benefits and drawbacks of each procedure. One method that has been gaining traction in recent years is the Ovary Sparing Spay (OSS). This procedure involves the removal of the uterus while leaving the ovaries intact, offering numerous health benefits to your furry friend1.

Understanding OSS

As its name suggests, OSS is a surgical procedure wherein only the uterus is removed, sparing the ovaries2. This means that while the dog will be sterile and unable to reproduce, she will continue to produce hormones that can contribute to her overall health and well-being.

Benefits of Ovary Sparing Spay

One of the key advantages of OSS is that it allows the dog to maintain normal hormone levels. Hormones produced by the ovaries have multiple roles, including maintaining bone and muscle health, supporting cognitive function, and regulating behavior3.

Dogs that undergo OSS have shown less aggression towards people and other animals, decreased incidence of cognitive dysfunction, and reduced fearfulness3. These behavioral benefits can contribute to a more balanced and well-adjusted pet.

Furthermore, OSS has been associated with fewer ACL issues, less chance of hip dysplasia, and a reduced risk of obesity4. Traditional spaying methods have been linked to a higher risk of these health problems, mainly due to the sudden drop in hormone levels post-surgery5. Especially incontinence.

Weighing the Pros and Cons

While there are clear benefits to OSS, it’s important to consider potential drawbacks. The surgery is more complex and requires a larger incision, which may result in a longer recovery time6. Moreover, leaving the ovaries intact means the dog will continue to go into heat, albeit without bleeding4.

Additionally, it’s worth noting that traditional spaying methods can prevent the development of ovarian tumors and reduce the risk of mammary cancer7. However, some sources argue that the risk of mammary cancer is significantly reduced only if the spay is performed before the first heat8.


Choosing the right spaying method for your dog is a decision that should be made in consultation with your veterinarian. OSS offers numerous health and behavioral benefits, making it an option worth considering. As with any surgical procedure, it’s important to weigh the potential risks and benefits to ensure the best outcome for your pet.