Yargk -- I'm not saying it's "right" in any moral sense; that'd be a category error. That's why I put the words "steal" "injustice" and "know" in quotes. Scavengers certainly have a role to play in the Big Picture.
However, in considering the q Moses raised, it occurs to me that there are notions of property in the Animal Kingdom, whether it's "turf" or a den or lair -- or a killed animal, animals have a rudimentary concept of property.
Again, Moses' q was why do we (humans) root for the lion almost instinctively. Well, we're not scavengers (by and large...) and as a species tend to kill what we eat and view property rights from a position more sympathetic to the lions.
If we, as a species, better identified with antelope, this would be a whole different conversation, no?

It just "is", I agree, but we're going to view the sit. from our own Kantian perspective, and tend to anthropomorphize the animals one way or another -- I was attempting to recognize the lens through which we view this sort of thing and provide to it some definition; no "right" or "wrong".
JP