We think we know what a cat’s purr means.
It is arguably the most recognisable sign of animal contentment: a pleasurable rasp that erupts whenever a cat is tickled or petted, the soundtrack to countless sessions sprawled on an owner’s lap.
But that’s not quite the full story. There is a lot more going on with the cat’s purr than you might reasonably expect.
Source: The complicated truth about a cat’s purr, an article by Stephen Dowling.