Margot Robbie Kept Pet Rat That 'Suicide Squad' Co-Star Jared Leto Sent Her

— -- A few weeks ago, news broke that Jared Leto went method for "Suicide Squad" and, acting as would the Joker, sent creepy gifts to his co-stars.

One of the more distinctive gifts was a pet rat sent to Margot Robbie, who plays the Joker's side-kick Harley Quinn in the movie.

"He sent [Margot] a nice love letter with a black box with a rat in it — a live rat," Adam Beach, who plays Christopher Weiss, aka Slipknot, in the movie, told E! News. "It was beautiful. Then he sent bullets to Will [Smith] with a letter."

Guess what? Robbie went method too and kept it.

"If Harley got something from Joker, she'd probably cherish it," the 25-year-old actress told Elle.

Now, the rat is named Rat Rat and it eats organic berries from Whole Foods, according to the interview.

"Suicide Squad" is scheduled to hit theaters Aug. 5, 2016.