New Research Reveals the Surprising Source of a Cat’s Purr
How Does a Small Animal Produce Such a Deep Sound?
Anyone who has a cat knows the calming and soothing sound of their purr. But have you ever wondered how such a small animal can make such a deep sound? New research suggests that the answer lies in a unique pad embedded in the vocal cords of felines.
Previously, it was believed that purring occurred through a special mechanism involving the contraction and relaxation of muscles in the vocal cords, which required constant control from the brain. However, anatomical investigations have now revealed the presence of a distinct pad within cats’ vocal cords.
This discovery could explain how cats, weighing only a few kilograms, are able to produce sounds at incredibly low frequencies, ranging from 20 to 30 Hz. These frequencies are even lower than the lowest bass sounds produced by humans.
«Our findings challenge the previous understanding of cat purring. The unique pad within their vocal cords allows them to regularly produce sounds at these remarkably low frequencies,» said Christian Autumn, a scientist from the University of Vienna.
A Step Towards Understanding Cat Purring
The recent findings, published in the journal Current Biology, do not directly contradict previous theories but indicate that our understanding of cat purring is still incomplete. In a controlled laboratory experiment, researchers demonstrated that the larynx of domestic cats can produce these low-pitched sounds using a mechanism similar to the human «harsh voice.»
While this research sheds light on the source of a cat’s purr, there is still much to learn about this fascinating behavior. Further studies and investigations are needed to fully comprehend the complexities of cat communication.
More Information
For more information on how cats communicate with each other, you can visit the US Library of Congress.
SOURCE: University of Vienna, press release, October 4, 2023.