Dungeon Dwellers (2010)

From publisher blurb:

Monster Brief provides a small selection of new, revised, or expanded creatures to be pitted against your players.

In this offering you’ll find the carnivorous cube, a slow moving, gelatinous creature that absorbs and dissolves most anything it comes across, the mad mouther, a raving creature that drives foes mad long enough to feed upon them, a revised minotaur who can fill the role of a very capable dungeon guardian, and the subterranean, stench-emitting savages, troglodytes...