Amnesia: A Machine For Pigs Discussion Topic Part 1

[Adny]

Now, granted I may be wrong, but who's to say that the monster isn't even pig related?

About 25 Second in pretty much confirms this new style of enemy. There aren't many creatures that can emulate the shriek of the swine; besides, it's even called "A Machine for Pigs". Originally, based on early interviews for the game, I thought it referred more to the greedy nature of mankind rather than the actual animal; but, now I see that it is pretty literal.

tl;dr - word pig in title + pig sounds in game = pig.