Post History

The Honey Badger is known to kill water buffalo by ripping out their scrotum and letting them bleed out.  Mostly out of spite I think for being disturbed, they mostly eat small game, honey, bee larvae, insects.

Something evolved to eat large prey has to be a pack animal or it would be a waste of food if it is not shared.

Something fast and poisonous could fit your requirements like a Cheetah with Komodo Dragon saliva and Piranha teeth. :-)