Katy Purry? Cats use technique similar to ‘vocal fry’, study shows

Scientists find feline low register when signalling pleasure is produced in a similar way to the croaky voice of some singers

Scientists have cracked the mystery of how cats produce the purring sound that signals their approval. It turns out they use a strikingly similar technique to vocal fry" - the croaky voice used by the singer Katy Perry and reality television star Kim Kardashian.

Researchers have long puzzled over how an animal as small as a domestic cat can produce the deep resonance of a purr, when such vocalisations are usually only produced by animals with far longer vocal cords, such as elephants. For many years, they believed purrs were produced using a unique mechanism that involved the cyclical contraction and relaxation of muscles in the voice box - something that would require constant neural input from the brain.