Thursday, 17 October 2013

Why Do Cats Purr?

For cat lovers, there are few sounds as precious as a beloved feline's purr. The purr — which is produced through intermittent signaling of the laryngeal and diaphragmatic muscles — is often interpreted as a sign of contentment, but the real reasons for this vocalization are a bit more complicated.

First of all, not all purring indicates pleasure. Cats also purr when they are nervous or in pain, leading some experts to believe that this uniquely feline vocalization is actually a method of self-healing.

A domestic cat's purr has a frequency of between 25 and 150 Hertz, which happens to be the frequency at which muscles and bones best grow and repair themselves. It is, therefore, speculated that cats naturally evolved their purr over time as a survival tactic — a biomechanical healing mechanism that ensured speedier recoveries.

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