Marmots Are Cannibals, Wallabies Are Killers
Humans run the animal kingdom’s only criminal courts. We alone bicker over the difference between murder and manslaughter, and plumb the ethical depths of intent. Other animals still kill their own kind, but whether they do so deliberately, with any semblance of malevolence or premeditation, is up for debate—mostly because we don’t have any real way to tell.