Scientists have learned how cats manipulate people with the help of purrs.

The study showed a noticeable difference in the acoustic properties of the purrs emitted by cats when they are trying to beg food from their owners, compared to when they are relaxed or petted. Cats' demands for food were perceived by humans as more urgent and less pleasant-sounding. It also included high-pitched sounds reminiscent of a baby's cry. At the same time, scientists from New Zealand suggest that purring causes a healing effect in cats. In certain situations, they may make such sounds to calm themselves or reduce physical discomfort.