Also, it's a hell of a difference between the wolf, who has to kill in order to survive, and the man, who just has to choose something else to eat in the supermarket or restaurant. Justifying ones choice by comparing oneself to a wolf is incredibly flawed. No one here would bat an eye if, for whatever reason, people have to hunt and kill in order to sustain themselves, like some tribes probably still do. We wouldn't call them evil for it. What can be called evil on the other hand, is the systematic raising, torturing, and killing of billions of animals every year. Because it's needless. We could easily survive without it, but we choose not to, because bacon. I get it, it's delicious. But at some point it becomes very questionable, and I'm even setting aside the sustainability aspect.
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.
As much as I respect the intelligence of those animals, what a remarkably low bar to measure ourselves against. May as well justify manslaughter and rape as while we're at it. Drawing a line that arbitrarily suits certain primal desires and justifying it by pointing at animals is how we move backward, not forward.