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.

When Is Kitten Season? Quick Vet-Reviewed Facts

Share

kitten trying to climb wall

Do you know what kitten season is? If not, you’re about to find out! If you’ve ever been involved in rescuing or fostering kittens, you’ll know that there’s a particular time of year that kittens are suddenly everywhere. Let’s find out more about why and how you can help.

divider 2 cats

When Is Kitten Season?

mother cat and kittens_Pixabay
Image By: Pixabay

In America, kitten season tends to be from March through to October, but it varies depending on climate. Female cats are “seasonally polyestrous,” which means they come into heat only at particular times of the year, and that time is from January to late fall in the Northern Hemisphere.

In warmer areas of the country, like California, kitten season can be longer, while in some parts of the world, it can last all year long. At this time, each female cat is capable of having multiple pregnancies. Feral colonies or even a female domestic cat that’s allowed to wander and hasn’t been spayed can have multiple litters of kittens during kitten season.

After the end of fall, a female cat usually stops coming into heat for the rest of the year, a process known as “anestrus.” She will rarely have any kittens during this time.

When Can Cats Come into Heat?

cats in gras_Astrid Gast_Shutterstock
Image by: Astrid Gast, Shutterstock

Unspayed female kittens can come into heat when they’re as young as 5 to 9 months old.

After this point, they will come into heat around every 2 weeks from January until October, depending on climate and temperature. Female cats will often do whatever they can to go out and find a male tomcat during their heat cycle. And males will do their best to locate the females based on the pheromones the females excrete in their urine. Female cats are “induced ovulators,” meaning her eggs are released from the ovaries after she’s mated with a male cat. This gives a high chance of her becoming pregnant.

The gestation period for cats is around 65 days, so before you know it, there will be a litter of kittens being born! Each litter usually averages between four and six kittens.

After a female cat has given birth to her kittens, she will come back into heat quickly, usually before her kittens are even weaned. If she meets and mates with a tomcat during this time, the cycle begins again, and another litter of kittens will soon be born.

How Can You Help During Kitten Season?

blue point ragdoll kittens_Liliya Kulianionak_Shutterstock
Image by: Liliya Kulianionak, Shutterstock

If you have a female cat, make sure she’s spayed. Female kittens can be spayed from 4 to 6 months onward, so speak to your vet about the best time to book your kitten in for her operation.

If you’re tempted to leave your female cat unspayed but don’t have any real intention of breeding her, be aware that female cats in heat can become absolutely intent on finding a male cat. If she’s kept as an indoor cat, you may find that she attempts to escape and yowls loudly, which is her way of attracting any male cats that happen to be in the neighborhood. If you do allow her outside, she may disappear for a few days as she finds a mate, only to come home already pregnant. If you didn’t intend for her to become pregnant, then you need to consider how you’ll find the kittens loving and responsible homes. 

Not to mention, your kitty may get injured while roaming, get into a road traffic accident, fights with other cats, or contract serious viral infectious disease during mating. All of this is easily preventable with spaying. It is the responsible thing to do not only for your cat but also for the growing cat population worldwide. Every little bit helps.

Animal shelters are full to bursting with kittens during kitten season, so consider offering to volunteer your time to care for the kittens. There may be kittens that need more intensive fostering at home too. Unfortunately, every year, there are around 3.2 million cats entering shelters across the country, and 860,000 end up being euthanized.

Kitten season might sound like fun, but it’s hard work for the shelters that care for the multitude of kittens coming through their doors at this time of year. If you’re ready to welcome a cat into your home, consider adopting a pair of kittens from a shelter, and know that you’re making a huge difference in the lives of those cats.

divider 2 cats

Conclusion

We can all agree that kittens are adorable, but instead of breeding your cat and contributing to the devastatingly high numbers of unwanted, abandoned, and euthanized cats each year, make a difference by getting your cat neutered or spayed and by adopting kittens or cats. 

Felines are very efficient breeders, which contributes to this overwhelming problem, and their breeding season lasts from January to late fall, meaning the kitten season usually starts in March. This can vary depending on the climate. Speak to your vet about the neutering procedure and all the benefits your cat will gain from it, and inquire with the local shelter about how you can contribute to helping and managing the growing feral and stray cat population.

See also:


Featured Image Credit: Mario_Hoppmann, 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.


Catster's Digital Magazine is Back!

Vet-approved health & behavior advice

Real cat stories & community features

Your Cat Isn’t Picky – Their Nose Is Just Bored

If you’ve ever sighed while scraping uneaten cat food into the trash, you’re certainly not alone. Many cat owners know the routine: their...

Ask Dr. Paola – Help! My Kitten Won’t Use the Litter Box! (July 27, 2026)

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

Chatting with Petra Luna About CatCrazy, Cat Food Ingredients & The Secret of E-Beams | Chatty Cattys, Episode 28

In this episode of Catster’s Chatty Cattys podcast, Nicole and Dr. Karyn welcome back Petra Luna from CatCrazy to catch up on her...

According to Vets, Most Owners Miss These Signs That a Cat is Sick

Cats are famously good at hiding discomfort. It is not stubbornness or indifference; it’s a deeply ingrained survival instinct. In the wild, showing...

More related

Can Cats Eat Tapioca? Vet-Approved Nutrition Facts

If you’re wondering if your kitty can lap up a bit of your tapioca pudding without getting sick or poisoned, you’ve come to...

Cat Food: Why It Pays to Get It Right

Hi, I’m Dr. Karyn! Read my introduction to learn more about me and meet my five hilarious cats: Clutch, Cyril, Alex, Zelda, and...

Why Is My Cat Acting Weird? 5 Vet-Reviewed Reasons

Some cats display what many owners would consider odd or weird behavior regularly. Others settle into a routine and can be quite predictable....

Do Cats Like Kisses? Vet-Verified Explanation

Kissing is a very intimate form of communication between people that allows us to show affection toward each other. There are lots of...

Keep reading

Where Do I Put Cat Food & Water Bowls? 6 Vet-Reviewed Options

Though the placement of your cat’s food and water bowls may seem like a minor consideration, it is a lot more important than some may think. Cats are fastidious animals that need routine and love having a calm, quiet, safe...

owner feeding his cat

Cat Spraying vs Peeing: Vet-Verified Differences

Dealing with your cat peeing inappropriately in your home can be exceedingly frustrating. Many cat owners don’t realize there’s a difference between your cat peeing and spraying. While it may not seem like it, the distinction is important because several...

Can Cats Eat Pumpkin? Vet-Reviewed Facts & FAQ

Yes, cats can eat pumpkin. It isn’t suitable as their whole diet or even most of their diet. However, it can be a nice treat or be used in specific circumstances to add nutrients to your cat’s diet. Pumpkin has...

Can Cats Eat Pumpkin

Do I Need to Give My Cat Supplements? Vet-Verified Pros, Cons & FAQ

Cats are family members, and we want to ensure they’re happy and healthy and get all the nutrients they need to thrive. Cats require protein-heavy diets, much like their wild cousins. Since they’re obligate carnivores, felines absorb nutrients from animal...

Woman at home holding her lovely Devon Rex cat on lap and gives it a pill

Why Is My Kitten So Hyper? 8 Vet-Reviewed Reasons for This Behavior

Kittens are easily among the most lovable animals on the planet. They are full of life and hilarious antics, and watching them learn how to act like cats can be great fun. But have you ever wondered whether your kitten...

2 Grey Striped Kittens Playing on a Blanket with Toy

How Often Should I Brush My Cat? Vet Approved Advice

If you’re a cat parent, you’re familiar with the lovely moments you spend brushing your cat while they purr away contentedly. Or, if your cat is less cooperative, you’re no stranger to indignant paw swipes. Although brushing may not be...

woman brushing the Persian cat

Can Cats Eat Slugs? Vet-Reviewed Risks & Precautions

Cool, damp weather is the best time for slugs to come out of hiding. Because cats are hunters, they decide to take matters into their own hands when they notice a sluggish blob on one of your outdoor plants. Usually,...

Can Cats Eat Slugs

5 Signs of Aggression in Cats: Vet-Reviewed Behavior Problems to Watch For

Aggression is a relatively common feline behavior problem, and it can have several causes, from pets getting a bit too carried away while playing to pain and fear. Feline aggression can be quite serious, it can cause injuries and make...

Scottish fold cat very angry and aggressive

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.