So why DO cats purr?

To Err is Human,
to Purr, Divine

While cat lovers might readily assert that their cat’s purr is an obvious sign of affection, science has, in fact, shed some light on the evolutionary functionality of the cat’s purr.

The consensus seems to be that purring offers a selective advantage to cats, and that the vocalization serves a purpose under many different circumstances. Cats purr when they are under duress, stress, in pain, and frightened, as well as when they are comfortable or happy. Cats also purr when they are nursing. Researchers have studied the purr in many scenarios.

Interestingly, cats purr when inhaling as well as when exhaling, and the pattern of the purr is consistent. Also, the frequencies of sound produces have been found to induce healing and bone growth/density. Thus, it is very possible that cats are not only improving their own health and the health of their growing kittens with purring, but may also be benefiting their human friends as well!


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