the.com/purr
a cat's low-frequency hum that may literally help mend its own bones
means To make the soft, continuous, low vibrating sound a contented cat produces — or, of a person, to speak in a similarly smooth, pleased, throaty way.
from An imitative word, coined to mimic the very sound it names — what linguists call onomatopoeia. English picked it up only a few centuries ago, and you can hear its kin in other languages doing the same trick: each one reaching for that low rolling rrr the cat makes. No deep root to trace; the cat simply told us what to call it.
- healing range
- Vibrates at 25-150 Hz, frequencies known to aid bone density
- not just joy
- Cats also purr when injured, stressed, or dying
- silent trick
- Cheetahs purr, but lions and tigers cannot
- built-in motor
- Powered by rapid twitches of the larynx muscles
- human request
- Some purrs hide a cry mimicking a hungry baby
cat purring — domestic cats vibrate their larynx at 25 hz when content, a self-soothing mechanism
lion purring — panthera leo can purr at lower frequencies than house cats, though less commonly studied
leopard purring — panthera pardus purrs during mating season and when nursing cubs in the african savanna