Bruising After Neutering on a Cat

A little post-op bruising in your cat isn't too unusual.

A little post-op bruising in your cat isn't too unusual.

Although not quite as complex or invasive as a female cat spaying, the neutering of a tomcat is still a bona-fide surgical procedure. Once you bring your cutie home, if you notice any minor bruising and swelling on your cat's scrotal region, be safe and notify your veterinarian immediately.

Common Effects

According to the Baltimore Humane Society, some subtle bruising by a cat's incision line is nothing out of the ordinary. Apart from some slight bruises, you also may notice the scrotal area of your kitty is kind of puffy and swollen in appearance. Although these signs may indeed be typical immediate reactions of the surgery, notify the veterinarian of your observations just in case. Keeping an eye on your little one's incisions for a few days post-neutering is always a smart and responsible idea. Peace of mind is a wonderful thing, after all.


Although initial bruising may be A-OK, in the days following the neutering make a point to closely monitor any and all your cat may have. If you notice that instead of fading away, the bruising is actually getting larger and more conspicuous, the ASPCA recommends seeking veterinary attention for your cutie as soon as possible. In the days after neutering, other important signs to look out for by the incision include a yellowish oozing discharge, foul smell and elevated masses that may be increasing in size.


With or without bruising, your little guy may also experience a negligible amount of bleeding from the incision spot. The San Francisco SPCA indicates that, straight out of surgery, a small presence of blood may be totally normal. However, since your cat's health is absolutely priceless, don't hesitate to tell the vet about any signs of blood.

Other Important Overall Signs

Apart from bruises and discomfort by the incision, other complications are always a possibility with neutering or any surgery in general. Keep a caring and watchful eye on your fluffball from head to toe. Alert your veterinarian immediately if you notice any indications of throwing up, diarrhea, extended appetite loss and unusually "out of it" behavior. The well-being and comfort of your cat are major priorities, of course!

About the Author

Naomi Millburn has been a freelance writer since 2011. Her areas of writing expertise include arts and crafts, literature, linguistics, traveling, fashion and European and East Asian cultures. She holds a Bachelor of Arts in American literature from Aoyama Gakuin University in Tokyo.

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