The Science Behind Those Big Ol' Puppy-Dog Eyes, Smart News
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Our canine friends evolved extra muscle fibers around their eyes and mouths that allow them to make facial expressions humans find adorable

Puppy Dog Eyes for the Smartphone Generation, by Clark Boyd, The Startup

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Scientists Think They Know Why Dogs Have Eyes That Tug At Our Hearts

Knew it. Your dog is making cute faces at you on purpose

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Puppy dog eyes' evolved so dogs could communicate with us
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