Cats purr when they’re happy, right? A new study says that purring conveys more than one message. Researchers from England’s University of Sussex took a close look at the purring noises made by hungry cats. They recorded hunger purring and happy purring from ten different cats and played the sounds back to human volunteers (ranging from dedicated cat lovers to people who had never owned a cat). Even the total feline novices could tell the difference between the contented rumble and the hunger noises. The hunger purring tended to be higher in pitch than the happy purring most people are … Continue reading →