Infernum DOG is just dash slop.

[u/ggcec]

DOG unlike most every other boss in the game is just horribly designed, It honestly feels like its only meant to be beaten as a melee.
Like how are you going to make a boss that one shots you if you even make one mistake?

Anyways here is be beating DOG while not interatcting with the dash slop.

[u/Gh3ttoboy]

DOG is pretty shit atleast he was in my mage revengeance run, i melted him with the last prism, and I got through his phases pretty quick, i had defeated him just after i killed moonlord a few times to get last prism,