It's easy to assume that cats purr because they're happy. After all, when your kitty contentedly curls up in your lap for some well-deserved scratches and rubs, she's obviously one happy feline.

Few sounds in the world feel as comforting as the soft purr of a cat. It is a quiet vibration that seems to carry warmth, trust, and calm. For cat owners, this gentle sound often becomes part of daily ...