Neutering in Cats
What is meant by castration or neutering?
Neutering and castration are the common terms used to describe the surgical procedure known scientifically as orchidectomy or orchiectomy. In this procedure, both testicles are removed in order to sterilize a male cat.
Why should I have my cat neutered?
Once a male cat reaches puberty, he will develop a number of behavioral changes that will make him a less desirable pet. He will become territorial and start to mark areas, even inside the house, by spraying urine. This urine has a particularly offensive odor that is difficult to remove. As the tomcat reaches sexual maturity, he will start to enlarge his territory, straying ever farther from the house, particularly at night.
"The longer a tomcat sprays and fights, the less likely neutering will stop these behaviors."
By increasing the size of his territory, he increases the likelihood that he will encounter other cats and get into fights for territorial dominance. The longer a tomcat sprays and fights, the less likely neutering will stop these behaviors.
Fight wounds can result in severe infections and abscesses. Diseases such as FIV and FeLV, which cause immunosuppression and AIDS-like syndromes, are spread through cat bites. These incurable diseases tend to be more common in non-neutered male cats. Finally, humane societies and animal shelters are overrun with unwanted kittens and cats, and neutering decreases the number of needless deaths.
When should I have my cat neutered?
It is recommended to neuter your cat before the onset of puberty. Puberty normally begins between six and ten months of age. We recommend castration at around six to seven months of age.
What does the operation involve?
Your cat will undergo a general anesthetic.
"Your veterinarian will advise you how long to withhold food and water before surgery."
You will need to withhold food prior to the procedure; your pet should have free access to water during most of the pre-operative fasting period. Your veterinarian will advise you how long to withhold food and water before surgery.
In male cats, both of the testicles are removed through small incisions in the scrotum. Since the incisions are very small, and since stitches may cause irritation of the sensitive skin of the scrotum, it is rare for the incisions to be sutured.
What surgical complications could arise?
In general, complications are rare during a castration surgery, however, as with all surgical procedures, there is always a small risk. Potential complications may include:
Anesthetic complications
Any cat can have an unexpected adverse reaction following the administration of any drug or anesthetic. Such cases are impossible to predict, but fortunately are extremely rare.
Another potential danger associated with anesthesia arises if the cat is not properly fasted prior to anesthesia. Anesthetized patients lose the normal reflex ability to swallow; during swallowing, the epiglottis, a cartilage flap at the entrance to the windpipe, closes and prevents food or water from entering the lungs. If there is food in the stomach, the cat could vomit while under anesthesia or in the early post-anesthetic period, allowing the food to enter the lungs and cause aspiration pneumonia, a potentially life-threatening condition.
Illness will increase the risks associated with anesthesia. Pre-operative blood work is a useful screening test that may detect pre-existing problems that could interfere with the pet's ability to handle anesthetic drugs. Our blood work package includes a CBC (complete blood count which analyzes red blood cells, white blood cells and platelet function) and a full biochemistry (included analysis of 12 internal components).
To minimize the risks to your cat, it is essential that all pre-operative instructions are strictly followed and that you report any signs of illness to your veterinarian prior to an operation.
Post-operative infection
This may occur internally or around the incision wound. In most cases, the infection can be controlled with antibiotics. A post-operative infection most commonly occurs when the dog licks the site excessively or is in a damp or unsanitary environment.
Are there any post-operative precautions I should take?
Rest and restriction of activity are the primary post - operative care you should provide. Most cats can resume normal activity seven to fourteen days after surgery. Until then, lost of rest and no running, jumping, playing are the rule.
© Copyright 2025 LifeLearn Inc. Used and/or modified with permission under license. This content written by LifeLearn Animal Health (LifeLearn Inc.) is licensed to this practice for the personal use of our clients. Any copying, printing or further distribution is prohibited without the express written consent of LifeLearn. This content does not contain all available information for any referenced medications and has not been reviewed by the FDA Center for Veterinary Medicine, or Health Canada Veterinary Drugs Directorate. This content may help answer commonly asked questions, but is not a substitute for medical advice, or a proper consultation and/or clinical examination of your pet by a veterinarian. Please contact your veterinarian if you have any questions or concerns about your pet’s health. Last updated on Aug 2, 2014.