Leaning back in his chair Nico nodded, "There is more to harm than simply feeling pain. What if we get to the point where someone says 'we don't need animals; we are much smarter, we will do a better job as animals than the creatures themselves.' and as for animals not noticing, have you ever seen a creature reacting to pheromones? What if in a transfigured form; not understanding the nature of the creature, one lets off the wrong pheromones, communicating that a certain territory is off limits- eliminating food sources and nesting areas?"