Scientific American .com
Why do cats purr?
J. Stone, Richmond, VA
Leslie A. Lyons, an assistant professor at the School of Veterinary Medicine at the University of California, Davis, explains.
Over the course of evolution, purring has probably offered some selective advantage to cats. Most felid species produce a "purr-like" vocalization. In domestic cats, purring is most noticeable when an animal is nursing her kittens or when humans provide social contact via petting, stroking or feeding. (MORE)

Derki.com
Miracle of Purring
Nalan Warren
As you know, humans have been investigating their body and sicknesses since these were aware of it.  It's possible to blame today's life style and stress for the cause of many sicknesses.  In my opinion the other reason is that we don't love and care enough for our bodies. (MORE)

Everyday Mysteries
Why and How do Cats Purr?
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 becoming more complete; most scientists agree that the larynx (voice box), laryngeal muscles, and a neural oscillator are involved. (MORE)


Hypertext Book.com
Frequency of Cat's Purr
Cats are one of the most sought pet to have in a home. Domestic cats are very amicable and express themselves through a fascinating way; purring. But why and how does a cat purr? Purring in cats consists of alternative impulses of sound, arising in the larynx. Each individual sound is caused by...(MORE)

National Geographic.com
Kids News
Does your cat purr when you scratch its chin? People often assume that cats purr because they are happy or relaxed. Some scientists, however, believe that there may be another reason why cats make that soothing sound. Have you noticed that a purr sounds like a... (MORE)


The Cat's Purr for Healing
Cat's Purr Promotes Healing
By Paula Peterson
Editor's Note:  This is an excerpt from the article "Secret Sounds That Heal", written by Paula Peterson and first published in the Spirit of Ma'at emagazine.  In September of 2002 she interviewed Elizabeth Von Muggenthaler, a research scientist and bio-acoustic specialist.  As Paula has put it in her own words, this researcher "has gone where no man (or woman) has gone before into the mysterious realm of the healing power of a cat's purring... (MORE)


Savannah Cats.net
The magical, Mysterious Purr
Once upon a time a comely princess faced a seemingly impossible task. To save her true love from death, she had to spin 10,000 skeins of linen in only 30 days. Heartbroken, the princess wept in frustration until her three cats took pity on her and agreed to help. With their rough tongues and swift, clever paws, the cats not only finished in plenty of time, but the linen they spun was the finest and most wondrous ever seen in the kingdom. The cats' reward? They were blessed with the ability to purr, so they... (MORE)

WiseGeek.com
Why do Cats Purr?
The vibrational frequency of the purr of a purring cat ranges from 25-130 Hertz. This happens to be a frequency which promotes healing of bones and eases muscle pain, suggesting that perhaps cats are actually healing themselves with the purring mechanism. This suggestion has been borne out by studies which show that cats tend to have faster healing bone fractures...  (MORE)


Brüel & Kjær
Purring the Pain Away
All the cats had purr frequencies between 20 Hz and 200 Hz. With the exception of the cheetah, which had frequencies 2 Hz from the rest, all the species had frequencies, notably 25 Hz, 50 Hz, 100 Hz, 125 Hz, and 150 Hz, that correspond exactly with the best frequencies determined by the most recent research for bone growth, fracture healing, pain relief, relief of breathlessness, and... (MORE)

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