Without needing to accommodate a human on board, drones are bound only by the laws of aerodynamics. That means shapes familiar and strange, from palm-sized rafts that resemble miniature helicopters to tube-launched boxes with wings that transition into fixed-wing vehicles in flight. One exciting frontier for drone body shape is biomimicry, masking the outward appearance of the robot by giving it a form that resembles an animal. Consider, if you will, a Russian drone, built to resemble an owl.