It could be claimed, though inaccurately, this is an analogy. People preferring to be careful with words eschew such "nit-witticisms". The all inclusiveness of world here automatically invalidates what little meaning is born. Factually, dogs do not eat dogs, another anthropocentric bias towards a noble species. Dogs' viciousness among one another is clearly purposeful to establish and maintain hierarchy, wounding for sport is not done. This is unlike human politics. I give these for examples as to why cliché sayings do not carry a weight of intended meaning. As a literary device one might include these insipid idioms in a person's dialog, especially if this person fancies themself as sharp and snarky. The irony being that their repertoire of poison arrows is hardly the quiver of quips they imagine, in truth only a pack of impotent pokey pins that annoy. - DJ Erickson
One of the most difficult tasks in the world is making people change their minds. Most of us are stubborn in our thinking and stick to our guns when it comes to views on morality, politics, and our own personal lives. For a rhetorician or speechwriter, writing and speaking in a convincing and persuasive manner is a profession, one which utilizes numerous tools of the trade to appeal to an audience. The power of persuasion can gain voters for a politician, convince people to take action for a cause, or get you a raise at your job. With appeals to both pure logic and powerful emotion, persuasion is an art that has been employed for centuries.