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Purr

en.wikipedia.org/wiki/Purr

It is neither continuous nor does it correspond to respiration, and thus is not a true purr. Problems playing these files? See media help. A purr is a tonal fluttering sound made by some species of ...

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

www.loc.gov/rr/scitech/mysteries/catspurr.html

No one knows for sure why a domestic cat purrs, but many people interpret the sound as one of contentment. Our understanding of how a domestic cat purrs is ...

Why Do Cats Purr? - Pets - WebMD

pets.webmd.com/why-do-cats-purr

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 ...

www.ask.com/youtube?q=How Do Cats Purr?&v=7_zKkBKu1fs
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

animals.howstuffworks.com/pets/question394.htm

And so it is with cats purring. We cannot purr, so we are interested in how cats can do it. It turns out that domestic cats, some wild cats like pumas and mountain  ...

Why do Cats Purr? 3 Reasons Kittens & Cats Purr

www.drsfostersmith.com/pic/article.cfm?aid=892

Everyone loves a purring cat? But what is your cat trying to say? Find out now.

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

www.catster.com/lifestyle/why-do-cats-purr-cat-behavior-health-evolution

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 Cats Purr - Cat Behavior Associates

www.catbehaviorassociates.com/why-cats-purr/

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? - Scientific American

www.scientificamerican.com/article/why-do-cats-purr/

Jan 27, 2003 ... 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 & How Do Cats Purr? - About.com

cats.about.com/cs/catmanagement101/a/why_cats_purr.htm

One of the top items of curiosity about cats is 'why do they purr?' Although there is no definitive answer why cats purr, it is a remarkable ability shared by no other ...

Answer
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.
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Why do cats purr? | MNN - Mother Nature Network

www.mnn.com

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 ...

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

www.wired.com

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

mentalfloss.com

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 ...