Animal IQ

The Science of Puppy-Dog Eyes

The science behind puppy-dog eyes may help explain how dogs became our companions thousands of years ago.

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Key Facts In This Video

  1. Japanese researchers say that looking into a dog's eyes creates a spike in oxytocin in our brains. 00:07

  2. A recent study proves levels of oxytocin increase in both humans and dogs when they lock eyes. 00:27

Written by Curiosity Staff May 4, 2015