News Margot Robbie Has a Pet Rat She Got From Jared Leto! By Jackie Willis 7:10 AM PDT, July 14, 2015 Photo: Elle Magazine Margot Robbie's pet rat might be the luckiest vermin in the world. The 24-year-old actress covers the latest issue of ELLE magazine and while she oozes glitz and glamour, her fans may be surprised to hear that she keeps a pet rat named Rat Rat. WATCH: Suicide Squad Cast Makes Surprise Appearance During Batman v Superman Comic-Con Panel Photo: ELLE The rodent was given to her by her Suicide Squad co-star Jared Leto -- or rather hischaracter, Joker -- during filming and the crew members suggested killing it. "If Harley [her character in Suicide Squad] got something from Joker, she'd probably cherish it," Robbie explained her decision to keep the rat. WATCH: Jared Leto and Margot Robbie Are Insanely Creepy (in the Best Way) in Suicide Squad First Look Rat Rat now lives on a diet of organic berries from Whole Foods. This rat is living large! Photo: ELLE Robbie also revealed to the women's magazine that she's always getting mistaken for being older. "People seem outraged that I'm 24," she said. "People think I'm a decade older." The Wolf of Wall Street looked delightfully frightening on set of Suicide Squad. Check Robbie out in her Harley Quinn costume: Margot Robbie Looks Badass as Harley Quinn on Set of 'Suicide Squad'