Cat's whiskers are a very sensitive touch receptor, it can take advantage of air vibrations resulting from pressure changes to recognition and perceived objects. In some cases, play a role in eye. When it encounters a narrow cracks or holes, Beard was as a measuring device, to determine one's body can be passed.
Every cat there is a mighty long beards, you don't look down on a few long, thin beard Oh! and whiskers on kittens to people, perhaps just a decorative appearance, but for cats, but is a special sensory organ.