How do ordinary cats purr? - briefly
Cats purr by vibrating their laryngeal and diaphragmatic muscles. This action creates a low-frequency sound that is perceived as soothing and comforting.
How do ordinary cats purr? - in detail
Cats are known for their distinctive purring sound, which is often associated with contentment and happiness. The mechanism behind this vocalization is both fascinating and complex.
The primary muscles involved in cat purring are located in the larynx, or voice box. When a cat purrs, the muscles in the larynx rapidly contract and relax at a rate of about 25 to 150 times per second. This rapid contraction and relaxation cause the vocal cords within the larynx to vibrate. The vibrations create a low-frequency sound that we perceive as purring.
The unique aspect of cat purring is that it can occur during both inhalation and exhalation, unlike most other mammals whose vocalizations are typically associated with exhalation. This continuous purring is made possible by the cats' ability to control the flow of air through their larynx, allowing for a steady stream of sound.
Interestingly, cats can also purr when they are stressed or in pain. In such situations, the purring might serve as a self-soothing mechanism, helping the cat cope with anxiety or discomfort. This dual nature of purring—both as an expression of contentment and as a coping strategy—highlights its multifaceted role in feline communication and behavior.
In conclusion, the intricate muscular actions within the larynx, coupled with the cat's ability to control airflow, enable this distinctive vocalization. Understanding how ordinary cats purr provides insight into their complex emotional and physiological responses.