Wednesday, 6 August 2014

Cats' Vocal Chords and Purring

Cats have 10 times as many vocal chords as dogs.  Dogs have 10 and cats have 100.

Cats can vibrate the muscles underneath their vocal folds, very slowly, producing a purr.  Domestic cats purr at a rate of about 26 cycles per second, similar to the frequency of a diesel engine as it idles.  Purring doesn't always mean the cat is happy.  It can also be a sign that a cat is in pain or some distress.

Cats rarely meow at each other, reserving this sound for their interactions with humans.

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