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Purring appears to be produced by the laryngeal muscles rapidly opening and closing the glottis. Unlike other vocalizations, purring is produced during the entire respiratory cycle and is not limited to expiration of the breath.



Domestic cat purring mixed with pronounced meowing ... or given food. It is neither continuous nor does it correspond to respiration, and thus is not a true purr.

Why Do Cats Purr? It's Not Just Because They're Happy | WIRED


May 8, 2015 ... So, why do it? If it's a form of communication, it's meant for those near and dear, since cats purr at a frequency and volume too low to travel far.

How Do Cats Purr? | Mental Floss


Aug 23, 2012 ... Biologists used to think that purrs were the sound of blood surging through cats' inferior vena cava, the large vein that carries blood from the ...

Why do cats purr? - Scientific American


Apr 3, 2006 ... Most felid species produce a "purr-like" vocalization. In domestic cats, purring is most noticeable when an animal is nursing her kittens or when ...

Why do Cats Purr? 3 Reasons Kittens & Cats Purr


When a cat is purring, it is almost impossible to hear the cat's heart or lungs very well, making examination of vital signs difficult. Oddly enough, many cats will ...

Why Cats Purr - Cat Behavior Associates


Sep 26, 2014 ... That gentle sound relaxes and even mystifies you, but just how much do you really know about why and how your cat purrs? Some facts may ...

Why Do Cats Purr? Some of the Reasons Might Surprise You - Catster


Mar 21, 2014 ... Cats are evolutionary masterpieces of design. They have evolved in such a way that many of their characteristics, including behaviors, are ...

Why Do Cats Purr? | Purring - LiveScience


Oct 11, 2013 ... For cat lovers, there are few sounds as precious as a beloved feline's purr. The purr is often interpreted as a sign of contentment, but the real ...

Why Do Cats Purr? | IFLScience


Jul 15, 2015 ... Curling up with a cat and its soothing melodic purring is most cat lovers' idea of heaven. But how do they actually manage that continuous, ...

Helpful Resources

Why and how do cats purr?(Everyday Mysteries: Fun Science Facts ...


No one knows for sure why a domestic cat purrs, but many people interpret ... Snow Leopard, and Clouded Leopard do not exhibit true purring (Peters, 2002).”.

Why do cats purr? | MNN - Mother Nature Network


Jul 16, 2015 ... Have you ever wondered why cats purr? It's easy to assume that cats purr because they're content, but research shows that purring is a means ...

How (And Why) Do Cats Purr? - YouTube


Mar 7, 2014 ... Cats purr for all kinds of reasons, including communication and healing themselves. Cristen explains how purring works and which cats can't ...

How do cats purr? - HowStuffWorks


Humans seem to be fascinated by animals who can do things that we cannot. For example, HowStuffWorks has answers to questions about camel humps, Hawk ...

Why Do Cats Purr? - WebMD


Feb 18, 2015 ... Purring is the most common sound cats make. Yet we know less about it than meowing, chirping, chattering, hissing, and growling. Yes, cats ...