Black pudding

A black pudding is an ooze that resembles a bubbling, heaping pile of thick, black goo, roughly 15' (4.57m) across and 2' (71cm) thick. They are mindless, underground-dwelling scavengers that wander and absorb whatever they find. They attack by grabbing, grappling and constricting prey directly into their liquid-esque mass. Like other oozes they also secrete a deadly acidic substance which strongly and quickly disolves weapons, clothing and organic tissue alike. When slashed at or pierced, the black pudding splits into two smaller puddings, both of which will do the same; this continues until they are too small and weak to do so further.