There was a Karate Master who killed a Rhino with his bare hands. I have been trying to find his name, but I have been unsuccessful. Basically he felt if the Rhino was charging, he could deliver a punch to the rhino's heart. This of course would kill it. Long story short... the rhino charged, he threw his punch, and at the same time the rhino dipped his head and the Master punched threw the rhino's horn. The horn flipped and stabbed the rhino in it's own heart. Killing it. Technically the Master killed it with his a punch, just not how he thought it would work out.....
The OCD kicked in, so I wasn't able to let this rest... I think I found the guy...Karate Master Mas Oyama.... I haven't found the story... but this guy has numerous stories of killing bulls... one with direct punch to the head....49 by wearing them out and then snapping their necks....