News in Brief Animals

How koalas sing low

Extra set of vocal cords lets males hit surprisingly low notes

GOING LOW  Koalas have an extra set of vocal cords outside the voice box that allow males to hit extremely low notes, researchers have discovered.

Poco a poco/Wikimedia Commons

By Beth Mole

- More than 2 years ago

Koalas have a newly discovered extra set of vocal cords that allows males to hit notes 20 times lower than expected.