Why Do Cats Purr?

When a cat purrs, it makes a rumbling, buzzing sound in its throat. Most people think cats purr only when they are happy, but cats also purr when they are nervous, sick, or want something! Scientists think purring might actually help cats heal — the vibrations may help their bones and muscles get better faster. Kittens start purring when they are just a few days old to let their mommy know they are okay. Purring is like a cat's way of talking!