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Cats and the Power of Purring
Aug. 23, 2006
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 motor? One theory says that this steady noise may actually help with healing. The frequency of the sound made by purring can improve the thickness of bones and the strength of muscles.
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Website: http://news.nationalgeographic.com/kids/2003/10/purring.html
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