The reproductive tract of male dogs consists of two testicles within the scrotum and the prostate gland behind the urinary bladder. Castration is the surgical removal of testicles that is performed on dogs that are no longer used for breeding. This not only prevents overpopulation but also avoids unwanted aggressive behavior. The chances of your dog getting testicular diseases are greatly reduced after castration. In the neutering procedure, a single incision is made in front of the scrotum to remove both testicles. Post neutering, your dog should limit activity because overactivity can lead to complications like bleeding and infection. Neutering does not change the personality of dogs but makes them less prone to diseases.