Is ethics another tool in a power play game (religion being another) that people use to exert dominance over other people? No one expects of cat or pigeon to be ethical. But somehow humans sometimes get overloaded by external demand to think of gazillion things that might offend someone (sometimes unreasonable demands, or how it might get interpreted (sometimes incorrectly)) before acting.
Im not saying ethics is bad, but sometimes people bend to to extremes (same like spirituality or religion)
Ethics has nothing to do with how an action is perceived, rather its focus is on is the action moral.
One should never take any action without considering the ethical implications of that action. Being capable of that is, arguably, the sole thing that meaningfully separates us from the (real or simulated) fruitfly.