Fettuccine is Olivia's cat, a white male fluffy cat. She has adopted him a few weeks before the start of Summer's Journal. He's seen as an escape artist by Summer for getting out of his space in Olivia's room to lounge in various places, but Olivia explains he doesn't like being cooped up. He's revealed to have diabetes; Olivia has to give him daily shots. Fettuccine is represented as Summer's Cat, Fettuccine (though the cat is not owned by her).