Índice
Introduction: Sometimes It’s Not Just a Mood—It’s Heat
If your female cat suddenly starts yowling, rubbing on everything, rolling on the floor, or trying to bolt outside, she may be in heat (also called estrus). Heat causes behavior changes—not “bad behavior”—and it can look intense the first time you see it.
Quick Answer: How to Tell If a Cat Is in Heat
A cat in heat usually shows behavioral signs (not bleeding) such as:
Loud yowling/caterwauling
Rubbing, rolling, and demanding attention
The mating posture (lordosis): front end down, hindquarters raised, tail held to the side
Restlessness/pacing and clinginess
Escape attempts to find a mate
Reduced appetite in some cats
Possible urine marking/spraying
Extra licking of the genital area
Importante: Female cats typically do not have menstrual bleeding. If you see sangre, thick discharge, lethargy, or your cat seems in pain, it’s safer to contact a veterinarian.
At-a-Glance Checklist (Snip-Friendly Table)
| Sign you’re seeing | What it looks like | Most likely meaning | What to do right now |
|---|---|---|---|
| Loud yowling | Long, intense cries (often at night) | Calling mates | Keep indoors, add play + routine |
| Rubbing/rolling | Rubbing legs/furniture, rolling frequently | Hormonal behavior | Offer attention, enrichment |
| Lordosis pose | Rear up, tail to side, “treading” | Heat behavior | Avoid letting outdoors; reassure |
| Pacing/restless | Can’t settle, wanders room to room | Searching for mate | Provide calm space + distractions |
| Door-dashing | Trying to escape outside | High pregnancy risk | Double-check doors/windows |
| Eating less | Skips meals or becomes picky | Heat can reduce appetite | Monitor hydration + appetite |
| Spraying/marking | Tail quiver + small urine sprays | Scent signaling | Clean thoroughly; keep litter pristine |
| Genital licking | More grooming than usual | Hormonal sensitivity | Watch for blood/discharge → vet |
If you want the full picture—how long heat lasts, how often it happens, what to do, and when to spay—here’s the full guide: Cuánto dura el celo de las gatas: cronología, signos y qué debes hacer
Now, if you’re here to decode the behaviors that mean “yes, she’s in heat,” let’s break down the 8 most recognizable signs and how to respond calmly.
8 Behavioral Signs Your Cat Is in Heat
How do you know if your cat is actually in heat and not just acting odd? Fortunately (or sometimes unfortunately for our sanity), a queen in heat gives off some pretty clear signals.
The symptoms are almost entirely behavioral – unlike humans or dogs, female cats do not have menstrual bleeding during their heat cycles.
So you generally won’t see any blood or discharge (and if you do, that’s no normal – more on that later). Instead, you’ll notice your cat acting very differently. Here are the classic signs of a cat in heat:
Loud yowling / “crying at night” (meowing a lot, calling)
You’ll usually notice loud yowling or “crying” at night—often described as nonstop “meowing a lot” or calling. These aren’t normal “feed me” meows; they’re longer, louder vocalizations meant to attract male cats.
Many people describe the sound as caterwauling. It can be quite startling (and yes, a bit annoying at 3 AM)! This vocalization is a key indicator of estrus.
What you’ll notice
Long, drawn-out yowls or “crying” that can sound urgent
Nonstop meowing a lot that’s different from normal food/attention meows
Vocalizing near doors, windows, or after petting
Why it happens
She’s calling to attract male cats and signaling she’s ready to mate (instinct + hormones)
What to do now
Keep her indoors; close windows/doors securely
Add calming structure: play session before bedtime, food puzzle, cozy dark sleeping area
Use white noise at night if needed (for your sanity)
Red flag (not typical heat)
Crying + ocultar, limping, or obvious pain → consider a vet check.
Extra affection + rubbing & rolling on the floor (attention-seeking)
Many cats in heat become extra affectionate and attention-seeking, but the giveaway is the combo of rubbing against objects (your legs, furniture, walls) and rolling on the floor. You might see frequent head-butting, cheek rubbing, and repeated “pet me now” behavior.
Even cats who are usually aloof may seek extra attention when in heat. (On the flip side, some cats get irritable if they’re not bred – but generally, they solicit interaction.)
What you’ll notice
Constant rubbing on your legs, furniture, walls
Head-butting, cheek rubbing, rolling, and “pet me now” behavior
Clinginess that feels unusually intense (even in normally aloof cats)
Why it happens
Hormones increase social/sexual behaviors and scent-marking through rubbing
What to do now
Offer attention on your schedule: short petting breaks + interactive play
Provide safe enrichment (scratching post, catnip, wand toys) to burn restless energy
Avoid letting her bolt outside when she follows you to the door
Red flag (not typical heat)
Sudden affection plus aggression/pain when touched, especially around abdomen → vet check.
Mating position: hindquarters raised, tail to the side (lordosis / presenting)
A classic sign is the mating position: she lowers her front end, raises her hindquarters, and moves her tail to the side—often called presenting. Some cats also “tread” with their back legs as if bracing for a mate.
Her back legs may pedal or “tread” as if she’s ready to meet a male. This posture (called lordosis) is an instinctive invitation for mating. She might also do this pose while walking, making her back look overly swayed.
What you’ll notice
The pose appears when you pet her lower back
Back legs may “tread” or paddle
She may do a mini version while walking, with an exaggerated sway
Why it happens
This posture is a reflexive mating signal controlled by reproductive hormones
What to do now
Keep petting gentle; avoid overstimulating the lower back if it escalates her agitation
Redirect with play or a treat puzzle when the behavior intensifies
Double-check doors/windows—this sign often pairs with escape attempts
Red flag (not typical heat)
Stiffness, yelping, or discomfort when her back is touched could indicate pain.
Restless pacing (can’t settle, wandering, anxious energy)
A cat in heat often seems restless—pacing room to room, wandering, or acting like she can’t settle. This often happens alongside loud calling because she’s both searching and signaling to potential mates.
What you’ll notice
Pacing room to room, frequent window-checking
Restless energy + increased vocalizing
Less interest in normal naps or routines
Why it happens
She’s hormonally driven to search for mates and respond to scent/sound cues
What to do now
Increase structured play (2–3 short sessions/day)
Add “quiet zones” (covered bed, calm room, dim lighting)
Keep a consistent feeding and bedtime routine
Red flag (not typical heat)
Restlessness with vomiting, lethargy, or collapse is not normal—seek vet help.
Trying to get outside (escape attempts, door-dashing, window watching)
During heat, many queens make escape attempts—camping by doors/windows, scratching, or door-dashing the moment there’s an opening. This “trying to get outside” behavior is a major reason accidental pregnancies happen.
This is how many accidental pregnancies happen. If you notice your cat hanging around the door, scratching at it, or bolting for an opening, she’s likely driven by mating instincts.
What you’ll notice
Camping at doors/windows, scratching, pawing at screens
Door-dashing the moment there’s an opening
Increased interest in outdoor scents and sounds
Why it happens
Mating instinct + pheromone cues can override normal caution
What to do now
Use a “two-step” exit routine: cat behind a door/room before you open exterior doors
Check window screens and latches daily
If she’s persistent, confine her temporarily to a safe room when you’re coming/going
Red flag (not typical heat)
If she escapes and returns injured, lethargic, or refusing food/water, contact a vet.
Eating less (poor appetite, skipping meals)
Some cats in heat have a poor appetite—they may eat less or skip a meal or two because the drive to mate overrides interest in food. Keep offering normal meals and monitor that she returns to usual eating afterward.
Just keep an eye to ensure she resumes normal eating after the heat passes.
What you’ll notice
Skipping a meal, picking at food, or eating smaller amounts
Still active/alert but “too distracted” to eat much
Why it happens
Hormonal drive to mate can temporarily outweigh hunger
What to do now
Offer normal meals at normal times; keep fresh water available
Tempt lightly with warm wet food (don’t radically change diet)
Monitor hydration and energy
Red flag (not typical heat)
No eating for 24 hours más lethargy, vomiting, or dehydration signs → vet check.
Frequent urination or peeing outside the litter box (spraying / marking)
Some females in heat may urinate more frequently, leave small amounts, or even pee outside the litter box (less common but highly searched). Others spray/mark vertical surfaces with a strong-smelling message to attract males.
The urine of a queen in heat contains hormones and pheromones that advertise her fertility to any tomcats in the vicinity.
If you see your girl back up to a wall or furniture with tail quivering – and a smelly spray results – she’s marking. It’s her way of leaving a scented message: “Available now!” Not great for your furniture, but it’s normal biology.
You can help prevent this by keeping a very clean litter box (she may be less inclined to mark if her box is pristine) and by confining her to an easy-to-clean area during heat if needed.
What you’ll notice
Small frequent pees or increased litter box visits
Vertical spraying: backing up to a surface, tail quiver, strong odor
Accidents near doors/walls/windows (common “marking” spots)
Why it happens
Urine can carry pheromones that signal fertility to male cats
What to do now
Keep the litter box extra limpio (scooped 1–2x/day)
Add an extra box temporarily if you have multiple cats
Clean accidents with an enzyme cleaner (prevents repeat marking)
Consider confining her to an easy-clean room during peak days
Red flag (not typical heat)
Straining, crying in the box, blood, or very frequent tiny pees can signal urinary issues—see a vet.
Excessive genital grooming (licking “down there,” no bleeding)
A cat in heat may spend extra time licking her genital area (excessive grooming) even though there should be no blood. Mild clear moisture can happen, but blood or foul discharge isn’t a normal heat sign—get a vet check.
Usually the grooming is just because the area may be a little swollen or feels different hormonally. If you notice sangre, strong odor, or your cat seems painful while urinating, jump to the Red Flags section below—those aren’t typical heat signs and deserve a vet call.
What you’ll notice
Extra grooming focused “down there”
Mild swelling or slightly increased moisture can occur
Often paired with rolling, rubbing, or vocalizing
Why it happens
Hormonal changes can make the area feel different, triggering extra grooming
What to do now
Don’t punish the grooming; it’s instinctive
Keep the environment calm and clean
Monitor for anything unusual (odor, discharge changes)
Red flag (not typical heat)
Blood, thick/foul discharge, strong odor, or obvious pain → vet evaluation.
When It Might No Be Heat (Red Flags That Need a Vet)
Heat is mostly behavioral. But some symptoms suggest something other than estrus—and it’s safer to get veterinary advice.
Contact a vet promptly if you notice:
Blood from the vulva, blood in urine, or a foul-smelling discharge (bleeding isn’t a normal heat sign).
Straining to urinate, crying in the litter box, frequent tiny pees, or urinating outside the box with signs of discomfort (can point to urinary problems rather than heat alone).
Severe lethargy, vomiting, fever, refusal to eat for more than a day, or obvious pain.
A swollen, painful abdomen or sudden collapse (urgent).
What to do right now:
Keep your cat indoors and comfortable.
Note what you’re seeing (blood vs clear discharge, how often she urinates, appetite).
Call your vet and describe the signs—especially if urination looks painful or you see blood.
This guide can help you recognize heat behaviors, but only a vet can rule out illness if red flags appear.
Conclusion: What to Do When Your Cat Is in Heat (Estrus)
Spotting the signs your cat is in heat helps you respond with calm, confident care instead of frustration. The yowling, rolling, clinginess, pacing, and “tail-to-the-side” posture can feel intense—but a female cat in heat isn’t being naughty. She’s reacting to normal hormones and instinct.
Quick recap
Heat is mostly behavioral (cats typically don’t bleed during heat).
Your main goals are to keep her safe indoors, reduce stress, and prevent accidental mating.
The long-term solution for repeated heat cycles is to talk to your vet about spaying.
What you can do right now
Secure doors/windows and supervise entryways (escape attempts are common).
Oferta extra play + enrichment to burn restlessness.
Keep the litter box extra limpio and maintain a predictable routine.
If you notice blood, thick discharge, or signs of pain, contact a vet promptly.
Want the full timeline—how long heat lasts, how often it repeats, and when to spay? Read the complete guide here: Cuánto dura el celo de las gatas: cronología, signos y qué debes hacer
With the right support (and a secure home setup), most cats get through heat more comfortably—and so do you.
PREGUNTAS FRECUENTES
Can you spay a cat while she’s in heat?
Yes—vets can spay cats even if they’re currently in heat, and your vet can advise on timing for your specific cat.
Is my cat in pain when she’s in heat?
Not typically. While cats in heat may sound distressed due to loud yowling, these behaviors are hormonally driven and not linked to physical pain. That said, your cat may feel frustrated or unsettled.
Do female cats bleed during heat cycles like dogs?
No. Cats do not have menstrual bleeding. If you notice blood, it may be a sign of illness or injury, and a vet visit is recommended.
How old is a cat when she first goes into heat?
Most cats enter their first heat cycle between 4 and 6 months of age, although it can occur as early as 4 months in some breeds.
How long do signs of heat typically last?
Behavioral signs usually last 5–7 days but can range from 2 to 14 days. They often repeat every 2–3 weeks until the cat is spayed or becomes pregnant.
Is urine spraying normal for female cats in heat?
Yes, some females spray urine as a mating signal. It’s their way of advertising fertility to males nearby. Keeping her litter box clean and limiting stress can help.
Should I isolate my cat during heat?
Yes, if there are intact male cats around or your cat is trying to escape. Providing a secure, calm space helps reduce stress and prevents unintended mating.
Referencias
Llera, R. M., y Yuill, C. (2022). Ciclos estrales en gatos. VCA Hospitales de Animales. Obtenido de https://vcahospitals.com/know-your-pet/estrus-cycles-in-cats
Lovejoy, J. (2023). Cats in Heat: How Long It Lasts and What To Do. PetMD. Obtenido de https://www.petmd.com/cat/general-health/cat-in-heat
Raíz Kustritz, M. V. (2006). Comportamiento reproductivo y fisiología de la reina. Teriogenología, 66(5), 701-706. https://www.sciencedirect.com/science/article/abs/pii/S0093691X06002378?via%3Dihub
Bukowski, J. A., & Aiello, S. E. (2023). Breeding and Reproduction of Cats. In Merck Veterinary Manual (Pet Owner Edition). Retrieved from https://www.merckvetmanual.com
Griffin, B. (2001). Estrategias proactivas para reducir la superpoblación felina: Programas de esterilización/castración de bajo coste. Revista de la Asociación Americana de Medicina Veterinaria, 219(12), 1667-1671.
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