How do cats purr? 🤔 Here's the science behind the sound! 🐱 Purring is one of the most fascinating sounds cats produce and it’s a ‘murmur sound’ which means it’s a sound made with a closed mouth. 🐈 Cats purr thanks to the rhythmic contraction of the laryngeal muscles (voice box) while breathing. This unique vibration happens on both inhalation and exhalation, giving the purr its steady, rolling rhythm. Purrs are low-frequency (around 27 Hz on average) - so low, you can often feel them when tou