Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Will Spaying Calm a Female Cat? Vet-Reviewed Effects, Benefits & Risks

cat being examined by vet at the clinic

Spaying your cat is something that veterinarians around the world recommend for several different reasons. Aside from the fact that it is the one way to reduce the number of strays that end up in animal shelters or homeless, it also can help protect your cat from several different illnesses and diseases.

Even though there are health benefits to spaying cats, there are some behavioral benefits that you might enjoy as well. So does spaying a cat calm them down? Well, spaying female cats does tend to calm them down after their recovery period, but this cannot be guaranteed. This article will explain everything you need to know, both good and bad, about cat spaying.

divider 2 cats

Behavioral Side Effects of Spaying a Female Cat

It’s true that spayed cats are usually calmer than those that aren’t spayed. This is because they are no longer driven by their reproductive hormones. However this can’t be guaranteed as some individuals and breeds are more lively than others.

Cats in heat can be a hassle to deal with. They become restless, vocal, and desperate for attention. We haven’t even mentioned the endless escape attempts and spraying that they’ll do in order to attract a mate. Because cats in heat are acting based on their hormones, you might also find that they are more irritable, anxious, and territorial as well.

Feral cats usually have a couple of mating seasons throughout the year, but indoor cats can go through their heat cycles throughout the entire year. Most cats are in heat for six days, but it can come back every couple of weeks.

feral cat with ear tip clipped
Image Credit: Krishna777, Shutterstock

Do Spayed Cats Still Act Like They’re in Heat?

It is not normal for your feline to be acting like she is in heat if she’s already had her spay surgery. This could be a sign that she has ovarian remnant syndrome. In other words, there is usually a piece of ovarian tissue that was left behind and is still signaling to her body that she needs to mate.

If your cat does have ovarian remnant syndrome, there are some tests that your vet can use to confirm it. Once confirmed, they will likely schedule another surgery to remove the leftover or extra tissue. If they don’t get the tissue removed, they are more likely to develop breast cancer, ovarian tumors, and pyometra.

divider 1 paws

The 4 Benefits of Spaying Female Cats

Having a calmer cat isn’t the only benefit of having her spayed. Here are several others:

1. Increased Friendliness

Your cat might be acting calmer, but she may be also friendlier than she was before. Since spayed cats don’t feel the urge to secure a mate, they are usually friendlier towards other cats. This is because they no longer feel like they need to compete with the other cats in the house. However individual cat experiences and personalities will vary.


2. Eliminated Chance of Pregnancy

While kittens are cute, they are a lot to handle and expensive to care for. Having a pregnant cat means finding good homes for them, paying all the vet bills, and having to handle difficult births that might even require surgery.

Newborn-kittens being nursed by mother cat
Image Credit: vvvita, Shutterstock

3. Fewer Abandoned Kittens

Cats reach sexual maturity when they are around 6 months old. From that point on, a female cat can have up to five litters every year. With multiple kittens per litter and cats living sometimes well over a decade, the math for the number of kittens in need of loving homes becomes overwhelming.


4. Reduced Health Risks

Unspayed cats are at higher risk for certain health complications compared to spayed cats. Unspayed cats are more likely to develop tumors that can sometimes be malignant, especially malignant breast cancers. They are also more likely to experience uterine infections that, if left untreated, could become fatal pyometra. When spayed it is commonplace for the ovaries and uterus to be removed and therefore it is not possible to have ovarian or uterine cancers after spaying.

divider 2 cats

Negative Effects of Spaying Female Cats

Although we believe the benefits far outweigh the negatives, there are still some cons to spaying your cats that you might want to consider.

veterinarian weighs an overweight pet on a scale
Image Credit: Zhuravlev Andrey, Shutterstock

Permanent Sterilization

Spaying your cat is an irreversible process. Once the surgery is performed, she will not become pregnant ever again. Some states have mandatory spaying and neutering laws in place because of overpopulation issues. Depending on where you live, you might have to spay her unless you’re a registered breeder. Those who don’t abide could face fines.

Weight Gain

Another negative side effect of spaying your cat is the potential for weight gain. Cats in heat can expend more energy while searching for males. Without that drive, females tend to become more sedentary. Reduced activity levels could cause obesity and other serious health conditions if their diet is not adjusted. However, you can counteract this by giving her plenty of playtime and buying her interactive toys that keep her moving. Being spayed doesn’t automatically mean that your cat will become overweight, but their calorie requirements are likely to decrease after spaying.

divider 3 paws

Final Thoughts

Even though there are some cons to spaying your cats, the benefits far outweigh them. Spaying your cat may make her a calmer, friendlier feline to be around. Always consult your vet about the appropriate time to spay her and try to get her surgery scheduled before she goes into heat at all. It will not only make your life easier, but it’ll secure more homes for cats that are already in need of a loving home.


Featured Image Credit: Libre, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.




How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.


Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

Skinderlop (Sphynx & Scottish Fold Mix): Info, Pictures, Temperament & Traits

The Skinderlop cat breed is a crossbreed of a Sphynx and a Scottish fold, which makes one of the most adorable cats you’re...

Living With Cats When You’re Immunocompromised: Our Vet Explains the Risks, Options, & Provides Tips

While countless studies tout the physical and mental benefits of pet ownership, it can still be nerve-wracking for immunocompromised people to be around...

Can a Cat Allergy Stop Love? Not For Wes & Raphael!

Welcome to the Wednesday Cats of Catster! Every week, we share a story from one of our cat-loving Catsters. This week is about...

Are Gardenias Toxic to Cats? Vet-Reviewed Houseplants Explained

Known for their strong fragrance and huge blooms, gardenia bushes are a gorgeous addition to your outdoor space. Cut blossoms make beautiful indoor...

More related

Why Does My Cat Drool When I Pet Him? 4 Vet-Verified Reasons for This Behavior

There’s nothing quite like the shared bliss of having a purring cat sleeping on your lap or chest, but nothing ruins these joyful...

Are Snapdragons Poisonous to Cats? Vet-Verified Houseplant Safety

Snapdragons are tall, candy-colored perennials that are usually grown as annuals. Gardeners grow snapdragons to brighten a garden or a front porch and...

Ask Dr. Paola – Emotional Stress, Resource Guarding & Coughing (June 2, 2025)

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

Can Cats Sense Death? What Science Says

Cat parents know that their cats can sense certain things. They might sense you are feeling down, so they curl up with you...

Keep reading

Do Cats Bleed After Giving Birth? Vet-Approved Facts & FAQ

If you plan to breed your cat or they’ve accidentally become pregnant, you probably have a million questions about what comes next. How long a cat stays pregnant is a good one, but there are many more. One of the...

Mother-cat-and-new-born-baby-kittens-drinking-milk-from-their-mom-breast

My Cat Keeps Walking Away From Her Kittens, Is It Normal? Vet-Approved Reasons & Facts

Kittens are challenging for queens and their owners. When they’re small, kittens are vulnerable to many dangers, such as not eating enough, getting too cold, and getting sick, so it’s common for us to worry about them! Newborn kittens are...

American shorthair cat kitten sitting

How to Restrain a Cat for Nail Clipping: Vet-Approved Safety Tips

Whether you already know it or not, cats scratching things is an instinctive behavior. While their claws provide defense, they also allow cats to communicate with other felines in the area with visual and olfactory signals. That’s not an issue...

trimming nails of cat

Why Do Cats Groom Each Other? Vet-Reviewed Licking Behaviors & Reasons

We’ve all seen videos of cats grooming each other, and there are many reasons for this. Often, they may be similar to the reasons why they cuddle with their humans. However, cat-cat relationships are much different than cat-human relationships. After...

Two cats grooming each other.

11 Best Cat Affiliate Programs – Reviews & Top Picks of 2026

If you are looking for the best cat affiliate programs of this year, you have come to the right place. In this article, we are going to take a look at the 11 best cat affiliate programs, including thorough reviews...

cat sitting in cardboard box

Royal Canin Cat Food Review in 2026: Recalls, Pros & Cons

Review Summary Introduction Royal Canin aims to make cat foods that prioritize what pets need, rather than what their owners think they’d prefer to see on the ingredients list. Their foods are formulated in collaboration with leading scientific, behavioral, and...

Royal Canin Cat Food Review

10 Best Cat Shampoos in the UK in 2026 – Reviews & Top Picks

Cats are generally very clean animals that spend a ton of time cleaning and grooming themselves. However, whether your cat is old, has mobility issues, or has managed to roll in muck or dirt, it might be necessary to give...

cat wearing a towel after a bath

BFF (Best Feline Friend) Cat Food Review in 2026: Recalls, Pros & Cons

Review Summary The BFF (Best Feline Friend) cat food line is an affordable, healthy, and tasty cat food for your best feline friend. Produced by Massachusetts-based Weruva, the BFF line contains ingredients from around the world and is manufactured in...

Best Feline Friend Cat Food Review

Love Cats? So Do We! Join the Catster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Catster Email Newsletter

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.