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The Hidden Physics of Cat Purrs
When a cat purrs, it sounds like a cozy little motor, but it is actually a complex biological trick. Inside their voice box, a neural oscillator sends rhythmic messages to the laryngeal muscles, twitching them at a steady frequency between twenty-five and one hundred and fifty hertz. Sound waves in this exact range happen to be natural healers. Scientists have noticed that these vibrations match frequencies that help bones grow, repair tissues, and ease breathing pain. So when your cat purrs at the vet, it might not just be saying hello, it might be medicating itself with sound.