Ben

Ben is a 1972 American horror film directed by Phil Karlson and starring Lee Montgomery, Joseph Campanella, and Arthur O'Connell. It is a sequel to the film Willard (1971). The film follows a lonely boy named Danny Garrison who befriends Willard's former pet rat named Ben. Ben becomes the boy's best friend, protecting him from bullying and keeping his spirits up in the face of a heart condition. However, Ben forms an army of deadly rodents while the police attempt to control it.