Cute koala "bears," huh? Well first of all, they're not bears, they're marsupials. And they're not so adorable, as this video will show you.
One tree just isn't big enough for two koalas apparently, forcing an epic showdown. The crying and yelping that follow will surely send chills down your spine.
The video was uploaded onto YouTube by Alicia Alexander on Jan. 2, which is in the thick of the breeding season that stretches from August to February. During the period when they're working to attract females, males bellow louder and become more aggressive. While it's not clear these two brawlers are male, that could go someway towards explaining the conflict.
In any case, the lesson is clear: Watch out for the koalas, 'cause they're coming for you.