A female cat that hasn't been spayed will enter estrus every three to four weeks, becoming quite loud during this period! This phase, lasting up to 7 days, makes her highly fertile, which means you will face a noisy cat with fluctuating hormone levels every few weeks. If you don't want your cat to have kittens, the best course of action is to take her to the vet for spaying. However, if you wish for her to reproduce, you'll need to manage behaviors like ear-piercing yowling and flirtatious antics. You will also need to find ways to prevent pregnancy if you don't want more kittens.
Steps
Handling Your Cat's Behavior

Reduce Your Cat's Yowling. During estrus, cats vocalize loudly and continuously to increase their chances of attracting a mate and reproducing. This behavior is entirely normal, although inexperienced cat owners may mistake it for pain. You can either let your cat vocalize freely or try various methods to help her calm down.
- Consider using a Feliway diffuser before your cat enters estrus. The synthetic pheromone it emits will help her feel secure and familiar. Pheromones are chemical signals, similar to the natural ones a female cat releases during estrus to attract a mate. However, the pheromone from the Feliway diffuser also helps to calm and soothe your cat.
- Although the effects are not immediate, the pheromone will accumulate and begin to calm your cat after a few weeks. Therefore, it's best to start using the diffuser in advance and keep it running continuously to maximize its effect when your cat enters estrus.

Dealing with Territorial Marking Through Urine. Not all female cats exhibit this behavior, but some may mark their territory with urine. The scent of cat urine is a strong pheromone designed to attract a mate. Unfortunately, there's no way to prevent this behavior aside from spaying, so you must learn to cope with it. Here are some tips to make it easier:
- Ensure your cat always has access to a clean litter box. Hopefully, she will maintain the habit of using the litter box instead of marking randomly around the house.
- Quickly eliminate the odor if your cat urinates outside the litter box. Doing this will prevent her from returning to the spot and marking again.
- Use a cleaner that contains "enzymes" to fully remove the cat urine smell. Enzymes in these products break down urine more effectively than other cleaners. Let the enzyme-based cleaner dry naturally for best results.
- You can create your own cleaner by diluting biological laundry powder with water. Wash the urine spots and rinse them with water. Then, wash again with a baking soda solution and rinse one final time.
- Always test any cleaning product on a small, hidden area of fabric before cleaning urine stains.

Prepare for Your Cat to Stick Close to You. The hormone levels in your cat's body will rise, affecting her behavior during estrus. You may notice some changes in her body language and communication.
- Your cat will seek more affection than usual.
- She will ask for back scratches, often lifting her tail to one side and exposing her genital area.
- Your cat may "crawl" across the floor, raising her hind end while keeping her front end down.
- She may also engage in enthusiastic stretching and rolling, sometimes yowling as though in pain. Don't be alarmed—she's just in heat and flirting.
- This behavior is completely normal and not a cause for concern, as long as no male cat gets near her, there will be no problem.

Show Your Cat More Attention. Make sure to engage with your cat regularly to help her burn off excess energy. When she has no more energy left, she'll be more docile and likely to nap instead of rolling around and yowling. Many female cats get noisy and even enjoy being massaged during heat. Don’t be surprised if your cat seems to be flirting with you or showing off her genital area!

Do Not Change Your Cat’s Diet. During estrus, your cat may lose interest in food, leading to weight loss and a less glossy coat, which may worry you. However, resist the temptation to offer her more calorie-rich food to compensate for her lack of appetite. Doing so will only give her more energy to use for yowling.
- Instead, continue feeding her the usual amount of food, providing a little more than usual, and let her eat freely whenever she feels like it.

Reduce Stress for Other Cats. If you have multiple cats, you can imagine how stressful it can be when one cat yowls for a week every three weeks. This can cause chaos. If you're using a Feliway diffuser to calm your female cat in heat, it will also help to reduce stress in your other cats.
- Keep in mind that the Feliway diffuser takes a few weeks to be effective, so make sure to turn it on before your female cat goes into estrus.
Preventing Your Cat from Getting Pregnant

Keep Your Cat Indoors. If you're used to letting your cat roam outside freely, it's important to keep her inside once you notice signs of estrus. Keeping her indoors will allow you to control whether male cats can approach her. If your female cat wanders outside, the sounds of her yowling and the scent of her pheromones will attract male cats from the neighborhood, making it highly likely that she will become pregnant.

Separate Female Cats from Male Cats in the Household. If you have an unneutered male cat, he will likely be drawn to the female cat when she is in heat. You should separate them until the female cat’s heat cycle ends.
- Confine the male or the female cat to a separate room.
- Prepare the room with a litter box, comfortable bedding, food, water, and toys to ensure the cat isn’t uncomfortable while being confined.

Close All Doors and Windows. Even if you’ve confined your cat indoors, male cats from the neighborhood may still hear her yowling and smell her scent. You’ll likely notice some male cats hanging around your house.
- Leaving doors or windows open—even if covered with a mosquito screen—is still risky. Persistent male cats might tear through the screen to get to your female cat, causing her to get pregnant even if she doesn't go outside.
- Block any pet doors that lead outside.

Consider Spaying Your Cat. Animal rescue centers are constantly receiving numerous adult and kitten cats that have been abandoned. It's still an ethical question whether we should allow cats to become unintentionally pregnant. You can have your cat spayed at any time. If cost is an issue, many animal rescue centers and social welfare organizations offer funding programs for this procedure. Check with local veterinary clinics to find out where you can apply for assistance.
Advice
- If you plan to breed cats, you should have sufficient knowledge and special equipment for the task.
- Remember that cats tend to vocalize louder at night and become more clingy.
- Be aware that a female cat kept indoors may try to escape to mate. Ensure she stays inside to avoid pregnancy, injury, or getting lost.
Warnings
- If your cat is bleeding, take her to the vet immediately. You might think that bleeding during estrus is similar to menstruation in humans, but they are completely different. Female cats do not bleed during their heat cycle.
