By the way, anyone know how I should tag the monster's legs?
digitigrade? (toes walker) The 'reverse knee' is actually an ankle, like those found in rodents/felines/canines and birds.
Of course, it could be an unguligrade (hooves walker), especially considering its horns and bovine themes, but on later images where you can see the foot, there don't seem to be hooves there.
Plus, well, Danbooru doesn't have the unguligrade tag.