Should You Spay or Neuter Your Cat?

1 Benefits of Spaying or Neutering

1. Spaying or neutering reduces many diseases. In males, the genitals are congested during mating season and the urethra is squeezed narrow, which can cause difficulty urinating and lead to cystitis or urethritis; neutering lowers the rate of anal-gland and prostate disease, stops territory marking with urine, and reduces aggression.

In females, overly frequent heat cycles can cause ovarian cysts, and mothers are prone to pyometra, mammary tumors, ovarian tumors, and fibroids. Because the vagina sits higher than the ovaries, fluid released during heat cannot drain normally and instead flows back into the ovaries, building up over time and causing inflammation, ulceration, and abscesses that can be fatal. Spaying prevents this.

2. It can extend a cat’s life. Neutered cats stay physically and mentally younger, with an average lifespan roughly doubled.

2 Potential Drawbacks

1. Obesity. After neutering, hormone balance changes and the cat no longer suffers heat stress, focusing on eating and sleeping; appetite rises while exercise drops, leading to weight gain. Neutered males eat far more than females and accumulate about twice the fat, so more of them become obese.

2. Obesity-linked disease. Excess weight raises the risk of diabetes, endocrine imbalance, weakened breathing, poorer heart function, constipation, and joint strain.

3. The biggest hazard is a higher rate of urinary stones, and males are more vulnerable. Overweight cats move little and drink and urinate reluctantly, concentrating urine in the bladder where stones can form; a male’s anatomy also prevents breaking down struvite stones, so males are more likely to develop them.

3 Making the Decision

Whether to neuter is ultimately up to you and your cat’s situation—if it benefits the cat, either choice can be right. But if you do neuter, always go to a proper veterinary hospital; never use improvised home methods to prevent pregnancy or sterilize a cat.