How Do I Know If My Cat Is in Heat? Signs, Symptoms, and What to Expect
Your cat’s heat cycle can be quite a surprise, especially if you are a first-time pet owner. You might be wondering, “How do I know if my cat is in heat?” and we get that this can be shocking for new owners.
If you notice sudden mood swings in your cat, the chances that she is in heat are high. But, it is not always this sign alone that determines heat in cats. You need to detect many other signs to be certain that your cat is in heat.
Many owners mistake these physical and behavioral changes for illness, so this only means that you need to have a proper tool or skills to detect it and be certain it is not a disease.
Stay with us and we will find out everything about cats in heat behavior and present you with a super helpful tool that might be helpful in detecting heat!
Key Takeaways
- Female cats usually go into heat between 4–12 months old, with cycles lasting about 1–3 weeks. Indoor cats may cycle year-round.
- Signs of heat include loud vocalizing, restlessness, increased affection, mating posture, and attempts to escape outside.
- Not all unusual behavior means heat — bleeding, lethargy, or painful cries may signal illness and require a vet visit.
- Tools like the Maven Pet Health Monitor can help track subtle changes and confirm heat-related behavior.
- Spaying is the most effective way to prevent repeated heat cycles and unwanted litters.
What Does It Mean When a Cat Is in Heat?
In simple words, cats are in heat when they are ready to mate and start their reproductive cycle. This phase is called estrus, and it shows that the cat is mature enough to mate.
The age at which the estrus cycle will show depends, but on average it can start between the 4th and 12th month of their lives, and it mostly depends on the breed and environment. Cats have 2 to 4 estrus cycles every year, and each lasts between 15 and 22 days. However, if mating does not occur, the heat cycle can last for 7 to 10 days and recur at 15 to 21 days.
During this period, you might observe unusual behaviors, and you will be clueless if this is your first cat. However, the Maven team is here to educate you on how to react when this happens.
How Do Cats Act When They’re in Heat?

Here is how to recognize the signs your cat is in heat:
- Loud vocalizing (yowling or howling)
- Rubbing against furniture, people
- Restlessness or pacing
- Increased affection or clinginess
- Assuming mating posture (raised hindquarters)
- Attempting to escape outdoors
- Licking the genital area more often
If you don’t know how to tell if a cat is in heat, then you should consult a vet, or even better and more cost-effective, get a pet health monitor tool!

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How Long Does a Cat Stay in Heat?
Cats might stay in heat for up to 7 days. If the cat does not mate, then the cycle repeats again. If a female cat isn’t spayed, she can go into heat again and again; sometimes with only a few days of rest in between. This cycle can continue for months unless she mates or is sterilized. That’s why it can feel like the behaviors like yowling, restlessness, and clinginess never stop.
Indoor cats have artificial lighting and temperature, and they can go into heat all year-round, not just spring and summer. This can also lead to long-lasting cycles. On the other side, outdoor cats follow the natural rhythm of the season, and their heat cycles occur in warmer months.
When to Worry: Signs It Might Not Be Heat
By this point you may still be wondering, “”how do I know if my cat is in heat”? How do we really know that our cats are in heat? Remember that the signs we mentioned can also be signs of a certain disease. We know that you are now confused, but you should be able to distinguish when it is heat and when it is a disease.
Even if you don’t know how to distinguish, one smart tool can do it for you. When cats are in heat, there are usually a few signs that might show up. When thinking about what “disease” it can be, always have in the back of your mind that it might be just a physiological process – the estrus cycle.
You should be worried only in cases when you notice the following signs:
- Unusual bleeding
- Loss of appetite
- Lethargy
- Bruises or injuries caused by increased activity
- Painful meowing or hiding behavior
If you are still unsure of what the cause of the issue is, then visit a veterinarian!
How the Maven Pet Health Monitor Can Help?
Now, if you have any doubts when raising a kitten, the Maven Pet Health Monitor can solve them all. The small, thin, and lightweight sensor and can be used with any collar, so it will perfectly adapt to your cat’s “look”!

Maven Pet
Health Monitor
#1 Vet-recommended pet monitor! Tracks activity, rest, respiratory rate, water intake, scratching and other health indicators 24/7
If you have more than one cat, no worries, Maven can track up to three pets simultaneously on the same account. It can track the cat’s activity and rest patterns, as well as their resting respiratory rate, heart rate and more. This can be valuable information because when cats are in heat, they have increased activity, for example.
This increased activity is usually observed at night, and if you are a heavy sleeper, you might not notice it. But no worries, Maven will do it for you and will also improve the overall pet wellness.
Maven will detect how cats act when they are in heat. This tool also monitors scratching, especially if there is a huge increase; it can mean that the cat is in heat. Maven will not only help your cat, but it will also help you understand everything about felines.
Conclusion

So, “how do I know if my cat is in heat”? Very simple: increased activity, loud vocalizing (you cannot miss this definitely), pacing, rubbing, and licking the genital area.
If you don’t want to raise a new litter, it is completely understandable, and it is medically approved. However, you need to consult with your vet and see when the best time for spaying or neutering is. Some countries approve these procedures as early as 4 months, but vets in many countries might refuse to do it at such an early age.
Even if you have no clue about how to recognize a female cat in heat symptoms, we can solve it for you! No matter the issue that your cat might have, you and your cat can stay safe with Maven Pet and track the most common behavioral patterns.
How did you react when you first noticed the signs of the estrus cycle in your cat? We are interested! Let us know in the comments below!
Maven Pet focuses on improving the quality of life of our pets with technology, using artificial intelligence (AI) to enable proactive pet care. By accurately collecting and monitoring pet data 24/7 and flagging any irregularities, Maven Pet empowers pet parents and veterinarians to stay ahead of potential health issues, ensuring the well-being and longevity of our beloved companions.