Cats experience natural reproductive cycles, and if your female cat isn’t spayed, you may notice sudden changes in her behaviour. These shifts are part of the heat cycle, also known as the estrous cycle. Understanding how this cycle works can help you manage your cat’s comfort, prevent unexpected litters, and make informed decisions about spaying.
In this guide, we explain the signs, stages, timeline, and care tips for a cat in heat, using clear and friendly language.
What Is the Heat Cycle in Cats?
A cat’s heat cycle is a recurring period during which she becomes fertile and ready to mate. Unlike humans, who have monthly menstrual cycles, cats are seasonally polyestrous. This means they go into heat multiple times during the breeding season—typically spring to early autumn.
Female cats can enter their first heat as early as 4–6 months of age, though some may start later depending on breed, environment, and health.
How Long Does the Heat Cycle Last?
Each heat cycle usually lasts 7–10 days, but the full reproductive cycle can span two to three weeks. If she does not mate, she will likely enter heat again shortly after.
Because the cycle repeats frequently, it may feel like your cat is constantly in heat unless she becomes pregnant or is spayed.
Key Signs Your Cat Is in Heat
Cats show very noticeable behavioural changes during heat. Some of these may seem unusual or even concerning, but they are completely normal.
Here are the most common symptoms:
1. Increased Vocalisation
Cats in heat often become extremely vocal. You may hear loud meowing, yowling, or crying—especially at night. This is your cat’s natural way of attracting potential mates.
2. Extra Affection
Your cat may rub against furniture, the floor, or you more than usual. She may follow you around and constantly ask for attention.
3. Rolling and Stretching
Many cats in heat frequently roll on the floor or stretch their back legs. This behaviour releases pheromones that signal fertility.
4. Restlessness
Your normally calm cat may suddenly act unsettled. She might pace around the house or try to escape outdoors in search of a male cat.
5. Lordosis Posture
When touched near her back or tail, she may raise her hindquarters and shift her tail to one side. This is a mating stance and a clear sign she is in heat.
6. Urine Spraying
Some unspayed females spray strong-smelling urine to attract male cats. This is hormonal and usually stops once the cycle ends.
The Stages of a Cat’s Heat Cycle
The feline heat cycle has four main stages:
1. Proestrus (1–2 days)
This is the beginning of the cycle. Your cat may become more affectionate, but typically won’t yet show loud vocalisation. Male cats may show interest, but she isn’t ready to mate.
2. Estrus (5–10 days)
This is the actual “heat” stage where your cat is fertile and actively looking for a mate. All the noticeable signs—vocalisation, rolling, affectionate behavior—peak during this stage. If she mates, ovulation may occur.
3. Metestrus / Diestrus (1–2 weeks)
If she doesn’t mate, the cycle slows down. Behaviour normalizes temporarily before she returns to heat. If she mates but doesn’t become pregnant, she may experience a false pregnancy, which usually resolves on its own.
4. Anestrus (Winter Rest Period)
During winter or periods of reduced daylight, many cats enter a rest phase with no heat cycles. Indoor cats may cycle year-round because artificial lighting can affect hormone levels.
How Often Do Cats Go Into Heat?
Cats can go into heat every 2–3 weeks, which means owners may see these behaviours very frequently. This is why spaying is often recommended to prevent stress on both the cat and the household.
How to Comfort a Cat in Heat
Though the heat cycle is natural, it can be stressful for both you and your pet. Here are some ways to help your cat stay calm:
1. Provide Extra Attention
Gentle petting, brushing, and spending time with your cat can ease her anxiety.
2. Keep Her Indoors
A cat in heat will try hard to escape to find a mate. Ensure windows and doors are secured.
3. Offer Warmth
A warm blanket or heating pad (on a low setting) can help soothe her.
4. Create a Calm Environment
Reduce noise, lower the lights, and provide safe resting spots.
5. Use Enrichment Toys
Interactive toys can help distract her and reduce frustration.
6. Clean Up Urine Marking Promptly
Use enzymatic cleaners to remove scent and discourage repeated spraying.
Spaying: The Most Effective Long-Term Solution
If you do not plan to breed your cat, spaying is the healthiest choice.
Benefits include:
- No more heat cycles
- Reduced risk of uterine infections (pyometra)
- Lower chance of mammary cancer
- Prevention of unwanted pregnancies
- Less stress and behavioural changes
Many veterinarians recommend spaying before the first heat, around 5–6 months, as early spaying further lowers health risks.
Can a Cat Get Pregnant During Her First Heat?
Yes—cats can become pregnant from their very first heat cycle. Young cats may not be physically ready for pregnancy, which can lead to complications. This is another reason why spaying early is important.
When Should You See a Vet?
Contact your veterinarian if:
- The heat cycle lasts longer than 3 weeks
- There is blood discharge (cats do not bleed like dogs during heat)
- She shows signs of illness, such as fever, vomiting, or lethargy
- You suspect a false pregnancy that lasts more than a few weeks
A vet can guide you on spaying or rule out underlying conditions.
Final Thoughts
Understanding your cat’s heat cycle helps you care for her better and recognise normal versus concerning behaviour. While heat cycles are natural, they can be stressful for both cats and owners due to vocalisation, restlessness, and frequent repetition.
Spaying is the most effective long-term way to prevent unwanted pregnancies, reduce behavioural challenges, and support your cat’s long-term health.
If you're noticing heat-related signs for the first time, don’t worry—your vet can help guide you through the best options for your pet.
