Yes, cats do blink, but their blinking is different from humans. Cats blink by partially closing their upper and lower eyelids, which may look like squinting rather than a full blink. They also have a third eyelid called the nictitating membrane that helps protect and moisten their eyes, which moves quickly and is often not visible. Unlike humans, cats don't blink to spread tears across their eyes since their tears evaporate instead; blinking mainly serves to protect their eyes. Cats also use slow blinking as a social signal to show trust and affection. When a cat slow blinks at a person, it is a gesture of comfort and safety.
