The whole mess puts me in mind of my dog, Smoke, who, every evening at sundown, sees her reflection in the glass of our front door and begins to bark ferociously. She is convinced, evidently, that an adorable white cockapoo doppelganger (dogpelganger?) is bound and determined to gain access to her home, eat her food, and steal the affections of her humans. … “That’s you,” I tell Smoke in my most reassuring voice, but she always forgets. And this is the catch-22 of confronting your doppelganger: bark all you want, but you inevitably end up confronting yourself.

FICTION: The dog-barking-at-her-own-reflection is a vivid metaphor that could anchor a creative piece about self-confrontation, mistaken identity, or unresolved internal conflict.

Naomi Klein, Doppelganger, loc. 83