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Why Do Cats Purr?

If you love cats, their purr is probably one of the most soothing voices in the world for you. Purring from cat is like the essence of satisfaction, but it sounds weird and odd. How does the cat continuously emit a perfect vibration for a few minutes? After decades of research, no one can find out exactly why. But here are some things that we can be sure about.

When the cat is sleeping next to you or is intimate with you, it can often be heard that it emits a continuous purring sound. Most people mistakenly believe that this is the purr cat made while sleeping. In fact, the purring sound is the sound a cat made when its false vocal cords vibrate.

From a medical point of view, the skeleton of the cat’s throat is composed of thyroid cartilage and cricoid cartilage. The laryngeal cavity is divided into three parts, the upper part is the laryngeal vestibule and the trailing edge is the false vocal cord. The cavity between the false vocal cord and the true vocal cord is the second part of the laryngeal cavity. The third part is the cavity between the vocal cords and the cartilage ring, which is very narrow.

A cat’s purr is a sound made by the resonance of laryngeal cavity when the false vocal cords vibrate. In fact, when cats are snoring, they do not fall asleep. Cats do not snore when they are playing, feel nervous and really fall asleep.Only when cats are satisfied, or when they feel relaxed and happy in owner’s arms, will they make a brisk purring sound.

At this point, adult cats and Persian cats are more prominent, while kittens rarely snore. Persian cats snore because of their short nasal passages. Adult cats purr because they are more appreciative of enjoying their lives and understanding humans’ caresses and relatives. Therefore, the most typical explanation for the purr sound is that it is a manifestation of happiness and satisfaction. But cats also purr for many other reasons.

Leslie A. Lyons, an assistant professor at the School of Veterinary Medicine at the University of California, Davis, explains that: “Cats often purr while under duress, such as during a visit to the veterinarian or when recovering from injury. Thus, not all purring cats appear to be content or pleased with their current circumstances.”

In fact, we don’t know why cats make a “purr” sound, but it seems obvious that this sound has multiple effects. Paul Leyhausen, a renowned animal behaviorist who has spent decades studying cats, said that purr is a way for cats to communicate with each other to show that they are not malicious. A recent study found that when a cat needs people to feed it, it emits a special “purr” sound (of course, it often makes a “purr” sound during eating).

Maybe actually the cat purred is not because it was happy, but just consoling itself with the fact that it had to be touched for the 50,000th time on the head by these active people.

In addition, if the cat keeps snoring regardless of the circumstances, it may be a respiratory infection, and don’t be careless about this.

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