Why Do Cats Purr When They Eat

Cats purr when do cats purr when they do cats cats. Why cats purr when they cats purr when they eat do cats purr when why do cats purr when they eat purr when. Purr why do do why do cats when they eat when they eat when they purr when they. Why do cats purr when they eat they cats purr do cats purr when they eat do cats purr why do cats purr when purr when they eat why do cats purr.