A cat's whiskers can be used as a ruler to measure the width of the path it is walking and to determine whether it can pass through a certain place. In addition, when we touch the cat’s whiskers, the cat will blink. This is because the cat’s whiskers and eyelids are connected through the nerve structure of the reflex arc, and the cat’s eyes will close reflexively when the cat’s whiskers touch foreign objects.

Cat whiskers are also a sensory organ, called vibrissae, which can sense a weight of 0.2g and a difference of 0.000005mm, helping cats walk freely in the dark.

In fact, cat whiskers not only grow on the mouth, but also have several whiskers hidden above the cat's eyes, on the sides of the cheeks, and on the inside of the cat's front legs.