Water buffaloes can be pretty dangerous when provoked. Most people would try to stay far away from them, but not Buck.
Tim Wells posted this video of his friend Buck hunt attempting to hunt a water Buffalo with a spear. Buck was able to sneak up within spear range without spooking the animal, but his aim was a little off. The spear flew low and embedded itself into the tree. Buck was able to grab another spear and throw it before the water Buffalo was out of range, but that one missed too.
Even though he missed you have to commend Buck for his courage.