Dogs likely evolved the gesture in response to human pressure. (Credit: Fotyma/Shutterstock)

You know that look Fido gives you from underneath the dinner table? Those puppy dog eyes, researchers recently discovered, are something unique to domesticated dogs that evolved over the 30,000 or more years that we’ve coexisted. 

In a study published Monday in the Proceedings of the National Academy of Sciences, researchers used dissections and behavioral analysis to compare the facial anatomy o