By definition Vampire ants are the undead ants which feed on the blood plasma of the living ants. They're the hooker's of the insect world, thought to be stuck somewhere between life and death. Ants are scavenger animals just like vampires. Vampire ants, on the other hand, are extremely unsocial. The colonies of undead ants act as a disunified whole described as individual organisms, a stark contrast with ant colonies which effectively work together, often termed superorganism.