The reproductive tract of male dogs consists of two testicles that are present within the scrotum and prostate gland which lies behind the urinary bladder. To prevent overpopulation, dogs are stopped from breeding by castration. Castration is the surgical removal of the testes which are the primary source of producing testosterone hormone. This can also help in preventing unwanted behaviors like inter-dog aggression and decreases the chances of the development of testicular diseases, prostatic enlargement, and infections. Neutering does not change the dog’s personality instead it makes them less susceptible to diseases. He will be less focused on finding a mate and more on your family.