Don’t read on if you want to be surprised, but we have some more details about the bosses in Dark Souls II thanks to the ESRB description.

You are about to go over the cliff…

Dark Souls II reportedly has a "giant snake boss holding a severed head" and "a giant boss creature composed of hundreds of corpses." Giant rats return along with the usual ghouls, zombies, and skeletons you would expect from a Souls game.