News Margot Robbie Has a Pet Rat She Got From Jared Leto! By Jackie Willis 7:10 AM PDT, July 14, 2015 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 PanelELLEThe 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 LookRat Rat now lives on a diet of organic berries from Whole Foods. This rat is living large!ELLERobbie 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'