Science Reveals The Shocking Truth Behind A Cat’s Purr

What makes the whole thing interesting is that house cats are generally small animals capable of producing low-frequency vocalizations between 20 and 30 Hz, which is the low end of the audible sound spectrum.

Producing these types of vibrations is typically associated with much larger animals, such as tigers and elephants, which have much larger vocal cords. And while larger animals, including larger cats, can produce loud roaring, house cats are only capable of producing low-frequency rumbling, known as purring.