Humans are very much like other animals in some fundamental ways. We need to eat, sleep and keep the company of others. We have emotions. We get lonely. We snarl a little when we're irritated.
Humans react to stress and abuse, just like other animals.
But unlike a tiger or a buffalo, we usually can't do either. If you're at school or at work and the person in charge is mean or unfair, you're usually expected to stick it out or work it out. As humans, we're expected to use our superior brains to work out solutions that don't involve flying fur. We're expected to do things that are far more difficult than lashing out, such as talking, listening, compromising and cooperating. And this often works beautifully.