The gelatinous cube is endowed with an insatiable hunger. These creatures scour dungeon passages, consuming living tissue while leaving bones and other materials undissolved.
Creatures that fall victim to a gelatinous cube rarely see it coming. Its protoplasmic form is all but transparent. By the time a creature makes contact with an unseen cube, it is too late to run. A cube that is well fed can be easier to spot, since its victims’ bones, coins, and other objects can be seen suspended inside the creature.