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