"Marley" the dog creates chaos when he enters the lives of young couple "John" (Owen Wilson) and "Jenny Grogan" (Jennifer Aniston) in "Marley & Me" (2009). However, they soon learn to love the Labrador puppy and he becomes a part of their family. When they have children he "helps" raise them and it is one of the most heart-breaking scenes of all time when he has to be put down by his vet.