Queensland scientists are using mobile phones to unlock the mystery of why koalas bellow.
The distinctive deep grunts and belows of the male Koalas sound in Australian forests in spring, but researchers still don’t understand what they mean.
Noises from koalas on St Bees Island off the coast of Mackay, in central Queensland, are now being relayed [...]

Koalas use a range of sounds to communicate with one another over relatively large distances.
There is a deep grunting bellow which the male uses to signify its social and physical position. Males save fighting energy by bellowing their dominance and they also bellow to allow other animals to accurately locate the position of the caller.
Females [...]