A cat's eye blink, often referred to as a kitty kiss, is a common cat behavior. Cats' eyes communicate information depending on how open the eyelids are, as well as what the eyes do. Cats' eyes demonstrate strong emotion, easily recognizable by other cats and by humans ... with a little practice. ⁠ ⁠ A prolonged, unblinking stare between cats is an intimidating gesture that often will cause a lower-ranking cat to turn tail and leave. Aggressive cats can use a long-distance stare to control access to their territory. You might not even notice, but the kitties understand that the top cat is "guarding" the hallway that leads to the litter box, for example, and so they won't dare challenge or trespass!⁠ ⁠ If you are trying to make friends with a strange cat outdoors, it would be a huge mistake to stare at him, as you will either intimidate him into leaving or bring out his aggressive nature. In either case, your attempt to make friends will probably be squelched. ⁠ ⁠ ⁠ _____⁠ ⁠ Cats use th...