Before you’re all like, Andrew, this boss is stupid easy, why are you putting this up… this isn’t the first encounter with the mad puppy. In the darling cursed and defiled dungeon, you only ever have have max half your HP. This means that you're really susceptible to the classic ‘one-shot kills.’ The Watchdog of the Old Lords has a few of these. Maybe it’s just me, but man did this dog give me HUGE problems on my path to the Chalice Dungeon boss of bosses.
Bloodborne: Watchdog of the Old Lords Boss Fight
Bad dog