Why Do Cats Purr? The Science Behind the Sound

Cats purr at a frequency of 25-150 Hz, which has been shown to promote healing in bones and tissues. While most associate purring with contentment, cats also purr when stressed, injured, or seeking comfort. The exact mechanism involves the laryngeal muscles vibrating during inhalation and exhalation, creating this soothing sound. Research has shown that the vibrations from purring can help heal bones, reduce swelling, and even lower blood pressure in both cats and their human companions. This is why cats often purr when they are injured or unwell - it's a form of self-healing. Veterinary scientists have discovered that domestic cats, as well as some wild cats like cheetahs and cougars, share this remarkable ability.