Neutering reduces fighting and abscess development in male cats. Roaming and Sexual Attraction Intact males have much larger territories and wander over much greater distances than females and neutered males. The urge to roam may be particularly strong during mating season. Neutering greatly reduces sexual interest, but some experienced males may continue to be attracted to, and mate with females. Physical Changes Male urine odor is particularly strong and pungent.
Castration leads to a change to a more normal urine odor.
Many owners claim that their intact males become much cleaner, less odorous, and better self-groomers after neutering. There are many misconceptions about the effects of neutering on health and behavior. Neutered males are no more likely to become fat or lazy provided they receive a proper diet and adequate exercise. With less roaming, fighting, mating, calorie intake may have to be reduced and alternative forms of play and activity provided. Behaviors that have developed independent of hormonal influences such as hunting are not affected.