The Cat Slow Blink: What Your Cat Is Really Saying (And How to Respond)
Quick Answer: When your cat narrows their eyes and blinks slowly at you, they're communicating trust, comfort, and affection. This behavior — sometimes called the "cat kiss" — is backed by peer-reviewed research from the University of Sussex. You can slow blink back to deepen your bond. Here's what the science says and exactly how to do it.
That Quiet Moment With Your Cat
You're sitting across the room from your cat. They're settled in their favorite spot, watching you with that calm, half-lidded gaze. Then, slowly — deliberate and unhurried — they let their eyes close and reopen.
It feels meaningful. And it is.
What you just witnessed is one of the most important forms of communication your cat has in their emotional vocabulary. It's not random. It's not drowsiness. It's a message — and once you understand what it means (and how to respond), your relationship with your cat will never quite be the same.
What Is the Slow Blink?
The slow blink — sometimes called the "cat kiss," the "eye kiss," or the "kitty kiss" — is a deliberate eye narrowing or closing that cats use as a non-verbal signal. Unlike a quick, involuntary blink, the slow blink is an intentional, relaxed movement.
You'll notice it happens in moments of:
- Calm contentment — when your cat is relaxed and comfortable in your presence
- Trust and safety — when your cat doesn't feel threatened by you
- Affection — a gentle, non-verbal "I like you" directed your way
In the wild, sustained direct eye contact between animals is often a challenge or a threat. By slowly closing their eyes in front of you, your cat is doing something remarkable: they're choosing to lower their guard. They're saying, I feel safe enough around you to stop watching.
The Science Behind the Slow Blink
This isn't just pet owner folklore. Research published in Scientific Reports (2020) by Dr. Tasmin Humphrey and Professor Karen McComb at the University of Sussex is the first peer-reviewed study to examine the slow blink in cats — and the results are striking.
The study involved two experiments:
Experiment 1: Researchers observed whether cats slow-blinked more at their owners when owners slow-blinked at them versus when owners maintained a neutral expression. Result: Cats were significantly more likely to slow blink back when their owners initiated the behavior. The slow blink is a true two-way form of communication.
Experiment 2: A stranger (not the cat's owner) interacted with unfamiliar cats, either slow-blinking or maintaining a neutral expression. Cats were more likely to approach the slow-blinking stranger and showed a preference for interacting with them. The slow blink didn't just work between bonded pairs — it created positive associations with entirely new humans.
Dr. Humphrey summarized it this way: "This study is the first to show that this slow-blink communication is actually a positive-emotional communication signal toward humans."
This is significant. It means:
- The slow blink is a learnable skill — you can initiate it
- Cats genuinely respond to it from both familiar and unfamiliar people
- It's not just anthropomorphism — the behavior has measurable, peer-reviewed effects on feline behavior
What Your Cat Is Actually Saying
When your cat slow blinks at you, they're communicating several things at once:
"I trust you."In cat language, closed eyes around another being is an enormous act of vulnerability. Your cat isn't worried about what you might do — they feel completely safe.
"I'm comfortable right now."Slow blinks tend to happen when cats are in a positive emotional state. If your cat is stressed, overstimulated, or uncertain, you won't see this behavior.
"I feel connected to you."Cats are often misread as solitary or aloof. The slow blink is evidence of genuine emotional bonding — your cat is choosing to engage with you in one of the most intimate ways available to them.
"You can slow blink back."Many cats will pause and watch after they slow blink, as if waiting to see if you respond. This is your invitation.
How to Slow Blink Back at Your Cat
The best part about all of this? You can start the conversation.
Here's exactly how to slow blink at your cat:
Step 1: Get into a relaxed positionSit or settle comfortably at your cat's level. Avoid looming over them, which can feel threatening. Try sitting on the floor or in a chair near their favorite spot.
Step 2: Make soft eye contactLook toward your cat with a relaxed, soft gaze — not a hard stare. Direct, wide-eyed staring can feel confrontational. Soften your face first.
Step 3: Narrow your eyes slowlyGently squint so your eyes narrow. Think of how your eyes naturally narrow when you're smiling.
Step 4: Close your eyes fully and hold for 1–2 secondsLet your eyes fully close, like you're taking a slow, deliberate blink — much slower than a normal blink. Hold for a second or two.
Step 5: Reopen slowlyOpen your eyes gently, without snapping them open. Keep your gaze soft.
Step 6: Look awayAfter the slow blink, glance slightly to the side. This "gaze aversion" signals that you're relaxed and not posturing.
That's it. You've just spoken Cat.
What to expect:
- Some cats respond immediately with a slow blink back
- Others take a few tries before they feel comfortable enough to respond
- Some cats may approach you after you slow blink — that's a very good sign
- Kittens and highly bonded cats often respond faster
A note on patience: Don't stare intensely at your cat waiting for a response — that can defeat the purpose. Slow blink, look away, and let them process in their own time.
Slow Blinking with Cats You Don't Know
One of the most exciting findings from the University of Sussex study was that slow blinking works with unfamiliar cats too.
If you're meeting a shy shelter cat, a friend's nervous cat, or any new feline, try this:
- Enter the space calmly and quietly
- Crouch or sit at their level
- Avoid direct staring
- Offer a slow blink
- Wait and observe
In the research, cats were significantly more likely to approach a slow-blinking stranger versus one who maintained a neutral expression. It's a universal feline signal — not just a behavior reserved for bonded pairs.
For families welcoming a new cat home, this technique can meaningfully speed up the trust-building process during those first uncertain weeks.
Common Mistakes That Work Against You
Even with the best intentions, a few habits can interrupt the connection you're trying to build:
Staring too intently before you blink. Hard, direct eye contact before a slow blink can feel like a challenge. Soften your face and relax your gaze first.
Blinking too quickly. A fast blink is just a blink. The key is the slow part — make it deliberate and unhurried.
Hovering or leaning over your cat. Physical posture matters. Try to get to their level. Looming sends a very different message than slow blinking.
Forcing the interaction. If your cat is stressed, hiding, or showing tense body language (flattened ears, tucked tail, wide pupils), wait for a calmer moment before trying.
Snapping your eyes open. Opening your eyes too quickly can feel startling. Bring them back open slowly, just as deliberately as you closed them.
Other Ways Your Cat Says "I Love You"
The slow blink doesn't exist in isolation. Your cat has an entire vocabulary of affection. Look for these alongside it:
- Bunting (head-butting or rubbing against you) — marking you with scent glands as their own
- Kneading — a leftover comfort behavior from kittenhood
- Chirping or trilling at you — a greeting reserved for trusted individuals
- Showing their belly — an act of vulnerability (though petting it isn't always welcome)
- Allogrooming you — social bonding through mutual grooming
- Bringing you "gifts" — sharing resources, a deeply trusting behavior
When slow blinks are paired with these behaviors, your cat is communicating affection through multiple channels at once.
Common Questions (Real Answers)
Q: My cat doesn't slow blink back. Does that mean they don't like me?A: Not at all. Cats vary significantly in how expressive they are. Some cats communicate affection through proximity, grooming, or simply choosing to be in the same room — not through visible eye behavior. Keep trying and don't take a non-response personally.
Q: Can kittens slow blink?A: Yes, and many kittens do it readily. Young cats that are well-socialized with humans often develop this behavior early.
Q: Does the slow blink work with all cats?A: It works with the vast majority of domestic cats. Feral or extremely under-socialized cats may not respond, as they haven't developed the same trust associations with humans.
Q: My cat squints at me but doesn't fully close their eyes. Does that count?A: Yes. The eye narrowing itself — even without a full close — is part of the same signal. Both the squint and the full slow blink communicate the same positive emotional message.
Q: Is there a best time of day to try this?A: Yes — right after your cat has eaten, when they're warm and relaxed, or when they're already settled in their favorite spot. Avoid trying during active play sessions or right before meals.
Q: Can I slow blink at a cat through a window or screen?A: Some cats do respond to slow blinks seen through glass or even on video screens. The research on this is limited, but many owners report success — especially with cats who are already highly bonded to them.
Make This Easier
If you've never tried slow blinking before, here's the simplest possible place to start:
Tomorrow morning, when your cat is in their chill, post-breakfast mode:
- Sit nearby at their level
- Make soft, relaxed eye contact
- Slow blink once
- Look gently away
- Notice how they respond
That's the entire experiment. No setup required. No products to buy. Just you and your cat, speaking the same language.
Over the following days, try it at different times and places. Take note of when they respond most readily — that's when they're most open to connection.
A Gentle Next Step
The slow blink is just one piece of a deeper relationship with your cat. If you're building a home that truly supports your cat's wellbeing — comfort, enrichment, mental stimulation — the environments and tools you create matter just as much as the moments of connection.
When you're ready to explore what your cat needs beyond that quiet bond, mustlovepets.store has expert-curated collections designed around exactly that: giving your cat a life where they feel safe, stimulated, and loved.
But first — try the slow blink today. That's where it starts.
Sources:Humphrey, T., Proops, L., Forman, J., Spooner, R., & McComb, K. (2020). The role of cat eye narrowing movements in cat–human communication. Scientific Reports, 10(1), 16503. https://doi.org/10.1038/s41598-020-73426-0