“…Swarming of insects, flocking of birds, schooling of fishes, and migration of coordinated cells are a few examples of various collective behaviours observed in nature. [1][2][3][4][5][6][7][8][9][10] A variety of reasons have been suggested behind the origin of collective animal motion, such as searching for food, finding new habitat, mating, and reproduction, etc. 1,11,12 Another important reason is the defensive strategy often opted by the prey to stay in a group to protect themselves from predator attacks.…”