Those big puppy dog eyes are 33,000 years in the making. According to a paper published in Proceedings of the National Academy of Sciences, dogs' faces have evolved to better communicate with humans. Read more about dogs' transformation below.

WE'VE MANIPULATED DOGS INTO MANIPULATING US. Those cute puppy dog eyes we love SO much are a product of domestication and breeding. CRACKED COM

DOMESTICATED DOGS HAVE EVOLVED TO WIDEN AND OPEN THEIR EYES IN WAYS THAT MAKE THEM LOOK CUTER TO HUMANS. Domesticated dogs have two additional eye mus

DOGS THAT RAISE THEIR INNER EYEBROWS IN SHELTERS ARE MORE LIKELY TO BE ADOPTED. Other facial movements don't have a similar effect. CRACKED COM

EYE CONTACT IS AN IMPORTANT ELEMENT OF DOG AND HUMAN SOCIAL INTERACTION. Over the course of 33,000 years, dogs have uniquely transformed to share a me

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Dogs are more capable of understanding human communication, like pointing or following an eyeline, than even primates or wolves. DOGS ARE EXTREMELY IN

DOGS MAKE EYE CONTACT WITH HUMANS TO HELP WITH PROBLEM-SOLVING. When humans make eye contact, dogs can understand that communication is directed towar

MUTUAL EYE CONTACT BETWEEN A DOG AND A HUMAN CAN LEAD TO AN OXYTOCIN FEEDBACK LOOP. This is similar to a human mother and infant. CRACKED COM

RESEARCHERS BELIEVE DOGS GAINED THESE TRAITS TO ELICIT CARE-GIVING FROM HUMANS. Human preferences (intentional or not) are believed to be responsible
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