Is it a coffee machine gurgling its last drops? Is it a muffled phone vibrating on a couch? Is it a small helicopter trying to take off very politely? No, it’s Sylvester the cat, purring away after ...

Why do cats purr? Humans tend to think that purring is a sign of happiness in a cat — and indeed it can be — but there are other reasons why our feline friends produce this particular vocalization.

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

There's plenty of things to love about cats, and purring is definitely one of them. Cat owners can always tell when their pet is happy from their low, contented hums. But do any other animals purr?

What does a cat’s purring say about it? More than many think. A study reveals surprising insights into the vocal communication of cats. While meowing varies greatly from situation to situation, ...