Megan Leavey is a 2017 American biographical drama film directed by Gabriela Cowperthwaite and written by Pamela Gray, Annie Mumolo, and Tim Lovestedt, based on the true events about a young Marine named Megan Leavey and a combat dog named Rex. The film stars Kate Mara as the titular character, with Edie Falco, Common, Ramón Rodríguez, and Tom Felton in supporting roles.