The inspiration for Mickey has never been clear. Walt Disney said that he came up with the idea on the train ride back to Los Angeles shortly after the confrontation with Mintz, but other records say that he came up with the idea after he returned to the studio. Walt Disney once said that he was inspired by a pet mouse he once had at the old Laugh-O-Grams studio, but more commonly said that he chose a mouse because a mouse had never been the central character of a cartoon series before.