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

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.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's an online service where you can talk to a vet online and get the advice you need for your pet — all at an affordable price!

PangoVet_Mention-in-Content for PangoVet2 save money

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.

Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

Why Does My Cat Lick My Ear? 3 Vet-Reviewed Possibilities

The sandpaper texture of a cat’s tongue unexpectedly plunging into your ear can be quite an uncomfortable shock. If your cat has this...

Is Declawing Cats Illegal in Australia? Reasons, Alternatives & FAQ

Declawing cats is illegal¹ in Australia due to its questionable ethics. It is also illegal in several other countries, though it is still...

9 Best Covered & Enclosed Cat Beds in 2025 — Reviews & Top Picks

Do you constantly find your cat sleeping in a cardboard box instead of its cozy and expensive bed? Although cats differ in personality...

How to Get a Vet Prescription Online: 9 Steps & What to Expect

Your cat has been shaking their head nonstop, and it looks like they have an ear infection. You call the vet’s office to...

More related

How Many Calories Should a Cat Eat? Vet-Reviewed Cat Feeding Guide

All cats have individual dietary needs based on their breed, size, age, and health conditions. As notoriously picky eaters, finding the right food...

20 Pet-Friendly Stores in the US (2025 Update)

While all stores are required to allow service animals, not all stores have to allow pets on their properties. So, it’s important to...

300 Majestic Cat Names: Great Ideas for Your Elegant Cat

Cats are among the most beloved creatures in existence. They are mysterious, independent, and luxurious. Choosing a majestic cat name is a great...

9 Best Cat Litters for Odor Control in 2025 – Top Picks & Reviews

Having a cat in your home is undoubtedly a rewarding experience, but it also comes with a unique set of challenges—one of which...

Keep reading

Can Cats Eat Dog Treats? Vet-Approved Nutrition Facts & FAQ

If your cat accidentally got into your dog’s treats, it’s normal to be a little alarmed. The good news is that, in most cases, it’s safe for your cat to chomp on a dog treat now and again. They’re not...

Can Cats Eat Dog Treats

Why Is My Cat Is Sitting Like a Person? Is That Normal?

Most cat owners can agree that there’s never a dull moment in a feline household. No matter your cat’s personality, they’re always up to their brand of mischief or mayhem. Plus, they spend a lot of their time performing actions...

Scottish fold cat sitting like a human

How Long Does It Take a Cat to Adjust to a New Home? Vet-Reviewed Facts & FAQ

There will be an adjustment period whenever you bring home a new cat. While all animals need an adjustment period to some extent, cats typically have a more dramatic adjustment phase. While dogs may be more prone to accidents and...

Savannah kitten

Do Cats Like Head Massages? The Interesting Answer

Felines are intriguing animals that have myriad ways that they like to interact with us humans. While all cats are different, many pet cats love head massages. Not only do they enjoy the physical interaction and motion of the massage,...

cat sleeping on owner's lap

Why Does My Cat Bite Me When I Pet Him? 3 Vet-Approved Reasons & Solutions

Cats are not always the most predictable creatures. Sometimes, they adore your petting and practically beg for your attention. Other times, they get irritated and bite you during the petting process. Why is that? More importantly, what can you do...

cat bites the woman's hand

Why Do Cats Like Ice Cubes? 6 Interesting Reasons

If you give ice cubes to your cats, you may be surprised by how much they like playing with them, nibbling on them, and chasing them around. There are many theories as to why cats like ice cubes. Some people...

Gray persian cat is licking ice to cool off

Can Cats Eat Popcorn? Vet-Reviewed Nutritional Facts & FAQ

If you’ve just sat down to watch your favorite movie with a big bowl of popcorn, what do you do if your cat comes over and starts trying to eat a few fallen kernels? Popcorn is a popular snack for...

Can Cats Eat Popcorn

Zen Clipper Cat Nail Trimmer (2025 Review)

Review Summary Nail trimming is an essential part of cat ownership to keep your kitty’s nails in tip-top shape while also protecting your furniture and yourself from unnecessary scratches. But not all nail trimmers on the market are created equal....

Zen Clipper Cat Nail Trimmer