Add Yahoo as a preferred source to see more of our stories on Google. Male Koalas have an extra set of vocal cords that helps them produce 'bellowing' sound as mating call.Source: Los Angeles Zoo Joe ...

Koalas have built a reputation as low-key animals. While other species compete for territory or put on elaborate courtship displays, koalas often seem to call it a day and go back to sleep instead.

Based on their size, male koalas should have a mating call that sounds like a human baby’s cry. But the call is actually closer in pitch to an elephant’s rumble. That is because koalas have a special ...