If you’ve ever wished your cat would show you a little more affection, science has some surprisingly simple advice. Researchers have found that one small facial expression—already familiar to many cat owners—can help strengthen the bond between humans and their feline companions.
Instead of trying to force interaction, you can communicate in a way cats naturally understand. Here’s how the famous “cat smile” works and why experts say it encourages cats to trust and approach people.
The Science Behind the Slow Blink

Researchers from the University of Sussex studied how cats respond to people who slowly narrow their eyes and blink. They discovered that cats were significantly more likely to return the slow blink and interact positively with humans who used this expression.
The findings suggest that slow blinking acts as a friendly social signal between cats and people, creating a calm and welcoming form of communication.
Why Cats Respond to Slow Blinking

Cats often use partially closed eyes and slow blinks when they feel relaxed, comfortable, and safe. Unlike direct staring, which many cats interpret as threatening, a slow blink signals peaceful intentions.
When humans copy this behavior, cats appear to recognize it as a non-threatening gesture, making them more willing to approach and engage.
The Research That Confirmed It

In one experiment, cat owners slowly blinked at their pets from a short distance. The cats responded by slow blinking back more often than they did during normal interactions.
A second experiment involved researchers who had never met the cats before. Even with complete strangers, cats were more likely to blink back and walk toward an offered hand after receiving the slow-blink signal.
How to Try the Cat Smile Yourself

Wait until your cat is calm and looking in your direction. Gently narrow your eyes as if you’re smiling, then slowly close them for a second or two before opening them again.
Avoid staring intensely or moving too quickly. Give your cat time to respond naturally, and let them decide whether they want to come closer.
Cats Communicate More Than Many People Realize

Modern research continues to show that cats are highly aware of their human companions. They recognize familiar voices, respond to emotional cues, and often form deep social bonds with the people they trust.
The slow blink is another example of how cats communicate in subtle ways, reminding us that affection isn’t always loud—it can be as simple as a quiet glance.