ANSWERS: 1
  • Scientists actually still do not know. They do know there is some sort of vibration but as there isn't anything specific that does it they just don't know. But they are learning more about why they purr. They don't just do it when they are happy. They do it to make themselves better like when they are scared or under stress and ill. It has healing and soothing properties. There is a website that documents how they have used the purring sound to speed the healing of broken bones. It's fascinating.

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