It's the rumble in the sort-of jungle!
Yes, bravo to brave YouTuber Allan Meredith, who managed to get close enough to two grey Eastern kangaroos to be able to film them fighting. (A distinctly smarter move than the poor British chap who recently got so close to two sparring stags that he actually became embroiled in the fight himself.)
It's wonderful to see nature in the wild, of course - although we can't help wondering: why can't kangaroos just settle their differences in a more adult way? Perhaps sit round and talk about things?
Still, at least it means there are two more contenders for our 'Animals That Can Kick Your Ass' video gallery...
Despicable Attic Cat
Incredibly Evil Penguin
Super Speedy Mega Cat
Kung Fu Hamster
Cat Vs. Crocodile
Kitten Takes On St. Bernard
Don't stand too close to the elephant!