Published on 25.08.2014 08:06
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When Shetland sheepdog Maggie comes home from the groomer, her owners praise and pet her shiny coat, much to the chagrin of pit bull Stormy, who will head-butt her until their family cuts out the compliments.
"Stormy's jealous," said owner Amy Putnam.
"You know how you're supposed to treat your kids the same? Well, that goes for dogs, too. They get along great and go with the flow until one thinks she is being slighted."
After hearing stories like Putnam's, a psychology professor decided to study for the first time whether the human emotion of jealousy really occurs in dogs. The nine-month study published in July in the science journal PLOS ONE hints that it could be possible, but other experts are not so sure behaviour like Stormy's can be called jealousy.