Cats purr for various reasons. This unique behavior can indicate satisfaction, stress, or even act as a natural pain relief.
Two main theories explain how cats purr: the "pseudo-vocal band" theory and the "blood turbulence" theory. Both have their own compelling arguments.
This theory suggests that cats have a second pair of vocal cords, allowing them to purr without opening their mouth, sometimes for hours.
This theory proposes that the purring sound comes from increased blood flow and turbulence as blood enters the cat's heart.
Purring is similar to smiling in humans. It releases endorphins and has a self-soothing effect on cats, helping them cope with various situations.
The rhythmic pressure from purring can strengthen bones. This discovery has inspired research into human technology, including astronaut health.
So next time your cat purrs loudly on your chest, let them. It's not just comforting, it could be benefiting your health too.