The reproductive system of a male cat includes two testicles which are enclosed within the scrotum, bulbourethral, and prostate gland, present in the pelvic canal. Castration should be performed for the cats that will no longer be used for breeding. This involves the removal of hormone-producing testicles to prevent overpopulation and lower inter-cat aggression. Castration will make them less susceptible to diseases and will not change their affectionate nature. A castrated cat will not roam around to find a mate and will be more focused on your family.