Jessica Chastain's Dog Makes Surprise Broadway Debut

Oscar nominee's three-legged rescue, Chaplin, makes unexpected appearance on New York stage

Jessica Chastain's dog is ready for his close-up.

In one of the cutest animal cameos ever, the Oscar nominee's three-legged rescue, Chaplin, unexpectedly walked onto the stage this weekend at Broadway's Walter Kerr Theater.

No biggie, except Chastain happened to be in the middle of a matinee performance of The Heiress!

The Juilliard-trained actress didn't even blink. Knowing Chaplin would follow her, Chastain simply walked offstage for a beat while continuing the scene.

Chaplin reappeared at the end of the show when Chastain held him in her arms during her final bow, according to the New York Post, which first reported the story.

"What can I say?" Chastain tells E! News. "He's going to break into the business one way or another!"

Chastain has two other dogs, Radley and Roman. No word if they're trying to break into the biz, too.