Marley (Marley & Me - 2008)

Marley wasn't a good dog in the traditional sense. He destroyed furniture, ignored commands, and turned his family's life into one long obedience-school nightmare. But he was their dog, and that's what made Marley & Me hit so hard. Watching Marley grow alongside the Grogan family felt uncomfortably real to anyone who's ever loved a pet. He's not saving children from wells or winning basketball games. He's just living life with his people, making messes and memories along the way. Beethoven might be funnier, and Lassie might be better behaved, but Marley has a weapon neither can match: the emotional devastation of his story. If greatness means making an audience love a dog like family, Marley is dangerous.