Sometimes during the game you may encounter a vorpal bunny, they are amongst the deadliest foes in Arcanum.Edit
A vorpal bunny may look innocent but is a deadly demon-bunny from the deepest spot of the void, they can do magick and have 18 strength and can kill you in three hits (they are incredibly fast too).Edit
They may be rare to encounter and are encountered mostly north of between caladon and leth wyverns sithning, recomended is that you do not attack because then you will probably die. Remember avoid them at all costs if you don´t want to get slaughtered, they look like white bunnies but don´t be fooled by their clever disguise they are from hell. Edit
They are probably a reference to the killer bunny from Monty Python and the Holy Grail.