What changes occur after a dog is neutered?

After neutering, a dog may experience some physical and psychological changes. First, from a physical standpoint, neutering reduces the dog’s male hormone secretion, which slows metabolism and decreases activity levels, potentially leading to weight gain.

Second, neutering lowers the risk of reproductive system diseases such as prostatitis and testicular cancer in male dogs, thereby extending the dog’s lifespan. Psychologically, neutering also brings some positive effects – for example, a male dog’s territorial instinct weakens, making it less likely to urinate around the house to mark territory, run away from home, or fight with other male dogs.