Cat's noses also have a slit that extends from the corner of each nostril. This is thought to allow the cats to breathe while their face is submerged in a carcass. The nose of a tiger illustrates the shape of cats noses. Here you can clearly see the slits extending from the corner of each nostril. They point backwards on the tongue, and are used to rasp the meat off of the bones.
Cats also groom themselves with their tongues.
Since cats do not eat much vegetation, they have no need to detect sugars in their diet, Thus cats can taste sour, bitter and salty, but have a limited ability to detect sweetness. These hairs can detect minute vibrations in the air, and can let a cat feel its way around in the dark or in a dark passageway. These hairs, which have numerous nerve endings at their base, are located above the eyes, on the cheeks, on the muzzle, and on their chin, as well as on the backs of the legs. The hairs on the muzzle, known as mystacial whiskers, are the most developed. These whiskers are mobile, and are used not only for detection, but for showing mood.