Grrr! Science proves dog jealousy is a real thing

A new study confirms that, yes, dogs can morph into green-eyed monsters.

According to a study published in PLOS ONE on July 23, dogs are capable of feeling a basic form of jealousy. Purported to be the first experiment on canine jealousy, the study could redefine the view that the complex emotion of envy is a human construct, says Christine Harris, University of California, San Diego psychologist and an author of the study.