Cats have a highly developed sense of smell, although not as much so as in dogs. This is further supplemented by the presence of a vomeronasal organ in the roof of the mouth, allowing the animal to “taste” the air. Cats possess highly sensitive whiskers set deep within the skin, and provide the cat with sensory information about the slightest air movement around it. For this reason they are very helpful for a nocturnal hunter. (Wikipedia.org)