Montie, an understudy for Vito Vincent, the feline co-star of "Breakfast at Tiffany's" on Broadway, has been fired for being unruly, the New York Post said.
"Poor Montie's been dismissed, and they're scrambling to have his head shot and bio replaced in the Playbill," a source told the Post.
His bio said he has appeared in the films "Heat" and "The Life Before Her Eyes," as well as the TV shows "30 Rock," "Sex and the City," "Rescue Me" and "Law & Order."
Details regarding his bad behavior were not immediately reported.
The stage adaptation of Truman Capote's classic novella stars Emilia Clarke, Cory Michael Smith and George Wendt.