The Lego cell has evolved knobs on one of its sides in order to link up with members of its species as a response to predation. They have perfected the sharp corner technique and anything that steps on the colony will experience a world of pain. This teaming up behaviour allowed them to eat cells much larger than themselves; they do this by linking up their knobs on another cell and sucking out the innards and cell wall. They share the food via all members sucking out each other's innards to the point where they all share the same insides.