It's cheesy, but the with great power comes great responsibility quote kind of holds up the way I see it. We pretty much dominate every other species, but we shouldn't pick and choose traits of other species in order to win arguments. We aren't wolves, we aren't dolphins. We have the capabilities to make the choice and don't kill and still survive. All it takes is changing ones habits a bit. We also have the capabilities to understand and decide that rape is wrong, and most people don't do it. Can you imagine what it would sound like if an accused rapist would point to dolphins as defense?
I'm not trying to set a standard for you. All I want to say is that pointing at other animals to justify our behavior is flawed and something we should be above as a species as a whole.