Neutering cats provides multiple individual welfare benefits that extend beyond the population control argument often used to justify the procedure.
The welfare case for cat neutering rests on multiple individual animal welfare grounds rather than solely on population control. Entire tom cats experience compulsive territorial roaming driven by reproductive hormones, exposing them repeatedly to road traffic, fighting injuries, and infectious disease transmission. Fighting wounds become abscesses and transmit FIV — feline immunodeficiency virus — that causes progressive immune failure. Entire females in permanent heat when denied mating experience behavioral distress. Neutering removes these hormonal drivers, dramatically reducing roaming, fighting, and associated welfare harms. The extension of average lifespan in neutered cats reflects the cumulative welfare benefit of reduced injury and disease across their lifetime.