Scientists have found that a cat's purr may actually support healing. A cat's purr vibrates between 25 and 150 hertz, the same frequency range used in medical vibration therapy to strengthen bones PSA: Cats love massage guns! A small sound with big power. A cat's purr isn't just cozy background noise. It sits mostly between 25 and 150 Hz the same range used in some medical vibration therapies. Pet Dog Cat Massaging Vibrating Mitt pet supplies My cat loves deep tissue massages with the massage gun and he gets mad when you take it away : r cats