When to Neuter or Spay Your Dog
The general answer is usually between 6-9 months of age, but for the Golden Retrievers this age range is different. New research from the University of California Davis School of Veterinary Medicine compares fixed Retrievers to intact Retrievers and looks at some of the major health concerns of these breeds development over their lifespan.
The research performed shows that the reproductive organs, known as gonads, produce hormones in both the male and female that set up the foundation of prevention for the major diseases found in the large breed dogs. The removal of hormone producing organs during the first year of a dog's life leaves the animal vulnerable to the delayed closure of long-bone growth plates.
According to this scientific study, the sweet spot for the Golden Retrievers that has the most preventive benefits against cancer and joint diseases is the 1-2 year age range.
Neutering before 1 year of age triples the incidence of joint disorders and the increase was worse in the Golden than the Labrador Retriever. In the Golden Retriever especially Cranial Cruciate Ligament and hip dysplasia.
Percent incidence of at least one cancer: