What does a cat's upper lip look like? - briefly
A cat's upper lip is typically thin and lined with small, fine hairs called whiskers. These whiskers are tactile sensory organs that help the cat navigate its environment and detect changes in air currents.
What does a cat's upper lip look like? - in detail
A cat's upper lip, also known as the philtrum or medial cleft, is a distinctive feature of their facial anatomy. This area is typically characterized by a vertical groove that runs from the base of the nose down to the upper lip. The philtrum in cats is usually less pronounced than in humans but still visible. It serves as a natural demarcation between the two sides of the upper lip, which are slightly divided at this point.
The upper lip itself is covered with short, fine hairs that often match the color of the cat's fur. The skin on the upper lip is smooth and delicate, similar to the rest of the cat's facial area. Above the philtrum, the skin transitions into the whisker pad, a sensitive area where the cat's whiskers (vibrissae) are located. These whiskers play a crucial role in the cat's sensory perception, helping them navigate their environment and detect changes in air currents.
The upper lip also contains several small muscles that allow cats to make various facial expressions. For example, when a cat is content or relaxed, its upper lip may appear slightly lifted, exposing the teeth in what is often referred to as the "flehmen response." This response allows cats to analyze scents more effectively by drawing air over their vomeronasal organ, located on the roof of their mouth.
In summary, a cat's upper lip is a complex and functional part of its facial anatomy, featuring a vertical groove known as the philtrum, fine hairs, delicate skin, and important sensory structures such as whiskers.