Pretty much every kind of flora and fauna in Australia can kill you. Seriously, take it from someone who was born there: Every crazy story you hear about Australian wildlife probably has some basis in reality.
One dude, however, decided to go to battle with that dangerous fauna. After he spotted a kangaroo roughing up a dog, this unknown plaid-shirted hero decided to take things into his own hands. Or, rather, his own fists:
There isn't much detail available on the clip's origins -- the description for the YouTube video only features the phrase "Man punches kangaroo in the face to save dog being strangled" over and over again -- but one Australian news outlet described it as "what might be the most Australian thing on the internet." I'm not going to disagree with you there, guys!