Margot Robbie's pet rat might be the luckiest vermin in the world.
The rodent was given to her by her Suicide Squad co-star Jared Leto -- or rather his character, 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.
Rat Rat now lives on a diet of organic berries from Whole Foods. This rat is living large!
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."