A purr or whirr is a tonal fluttering sound made by some species of felids, including both larger, wild cats and the domestic cat (Felis catus), as well as two species of genets and the Caquet titi monkey (Plecturocebus caquetensis).
Research shows that the vibrations from a cat's purr fall between 25 and 150 Hz, a frequency range that promotes tissue repair and lowers stress hormones. Cat owners have a 40% lower risk of heart attack compared to non-owners. Here's how your cat's purr benefits both of you.

Long thought to be a sign of a contented kitty, purring can actually benefit cats in a number of ways.1.Since purring is beneficial to your cat, it should be encouraged as much as possible. Here are a few tips to help elicit more happy purrs from your kitty
Furthermore, visual representations like the one above help us fully grasp the concept of What Are Benefits Of Cat Purrs.
It's no secret that cat owners find the soothing sound of their cats' purrs incredibly relaxing. The frequency of a purr, around 25 Hz, is thought to stimula...

And the purr may not just be of benefit to the cats themselves. Petting a cat has long been seen as a form of stress relief cat ownership could cut the risk of stroke or heart disease by as much one-third.
purr is distinctive from other cat vocalizations.
Have you ever wondered why do cats purr? Find out everything you need to know about cat purring, including how they do it and how it can benefit you.