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

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

National Cat Lovers Month 2025: When & What It Is

National Cat Lovers Month is every December, and this year is no exception. It’s a month specifically set aside for you to sit...

How to Help a Child Grieve the Loss of a Pet: 10 Tips to Overcome Sadness

If you grew up in a household with pets, you’ve likely experienced the heartbreaking loss of your cherished companion. And with a child...

How Do I Apologize to My Cat in A Way They Understand? 7 Effective Ways

After only a short time with your pet, you develop a special bond, and one of the things that makes it so special...

10 Best Cat Strollers in 2025 – Reviews & Top Picks

Your cat would probably love to get out and explore. If you don’t want to fiddle with leash training or you just want...

More related

10 Best Cat Treats for Picky Cats (2025) – Reviews & Top Picks

You spend hours at the pet store picking out the best treats for your cat, only for them to be rejected without so...

Abyssinian Siamese Mix: Info, Pictures, Care Guide & Temperament

Mixed-breed cats can have huge personalities and offer more unique traits than most purebreds, and it’s a big reason why so many people...

Are Goldfish Plants Poisonous to Cats? Vet-Reviewed Houseplants Examined

Hardy and colorful goldfish plants can make stunning additions to your home. The brightness of the flowers and the movement of leaves can...

Are Forget-Me-Nots Toxic to Cats? Vet-Reviewed Houseplants Examined

If you’re a flower fanatic, you have undoubtedly seen and adored the lovely forget-me-not. Woodland forget-me-nots (Myosotis sylvatica) are a species of perennial...

Keep reading

When Can Kittens Leave Their Mom? Vet-Verified Facts & FAQ

Kittens are born helpless and blind—dependent on mom to get them through life. After the first several weeks, mom and onlookers alike will be shocked at how quickly they grow and become independent entities apart from their caretaker. If you...

Asian leopard kitten on the wooden table

How to Play With Your Cat: 10 Vet-Approved Tips & Ideas

Playing with your cat is a great way to pass the time, get a few laughs, and build a close bond with your feline friend. Not only that, but it’s also necessary to keep your cat happy. Each cat finds...

woman-playing-with-her-cat

Why Is My Cat Panting After Giving Birth? Vet Approved Facts & FAQ

Breeding your cat is a beautiful experience both for you and your cat. And while being pregnant is exciting, giving birth can be challenging for your furry friend, especially if she gives birth to multiple kittens. After giving birth, many...

fluffy cat pregnant give birth and new born baby kittens_iarecottonstudio_shutterstock

Cat Mammary Cancer: When to Euthanize: Vet-Approved Guide & FAQ

You know that you’ll have to make a difficult decision when you find out that your beloved pet is reaching the end of their life. Unfortunately, mammary cancer is one of the most aggressive forms of cancer in cats, and...

vet checking up the cat

Why Does a Mother Cat Move Only One Kitten? 4 Vet-Approved Reasons & When to Worry

If your gorgeous cat has just had kittens, it can be an exciting time for you as a pet parent. Despite the urge to meet those kittens right away, though, it’s best to give your cat time alone with her...

Mother cat carrying her newborn kitten outdoors

How to Choose Cat Food: 10 Vet-Approved Tips & Tricks

Cats and humans have shared a mutually beneficial relationship for roughly 12,000 years. People developed agriculture, which attracted pests, and felines happily acted as pest control. The cat’s role in human society and their subsequent adaptation and domestication provide vital...

tabby kitten eating kibble from the feeding bowl

5 Cat Marking Behaviors: Vet-Reviewed Facts & Prevention

Cats may be small, but they are territorial little things. It makes a lot of sense if you think about your cat’s wild ancestors. They were only able to survive if they were successful hunters with access to a secure...

cream silver tabby norwegian forest cat marking its territory

Can Cats Eat Pesto? Vet-Approved Risks & Safe Alternatives

Pesto is a household staple used in various foods, such as salad dressing, pizza, and chicken—the possibilities are limitless! If you’re a cat owner, you may have noticed your feline nosing around when you bust out this sauce, but is...

Can Cats Eat Pesto