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Researchers around the world have repeatedly found that strangers can match photos of dogs with photos of their owners at a rate well above chance [4]. Perhaps people are drawn to animals that look like them. In a study of female college students, those with longer hair judged flop-eared dogs—spaniels, beagles—to be more attractive, friendly, and intelligent than dogs with pointy ears; women with shorter hair concluded the opposite [5]. And the apparent affinity between owners and pets is more than fur-deep: One analysis found self-described “dog people” to be less neurotic than “cat people,” who were more curious [6]. Another study, which cross-referenced personality-test scores and breed preferences, noted that disagreeable people favored aggressive dogs [7].

[4] Nakajima et al., “Dogs Look Like Their Owners” (Anthrozoös, June 2009)

[5] Coren, “Do People Look Like Their Dogs?” (Anthrozoös, 1999)

[6] Gosling et al., “Personalities of Self-Identified ‘Dog People’ and ‘Cat People’ ” (Anthrozoös, Sept. 2010)

[7] Egan and MacKenzie, “Does Personality, Delinquency, or Mating Effort Necessarily Dictate a Preference for an Aggressive Dog?” (Anthrozoös, June 2012)

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– http://www.theatlantic.com/magazine/archive/2013/11/why-you-look-like-your-dog/309526/