Hotelier and real estate magnate, Leona Helmsley, leaves $12 million in her will to her dog, Trouble.
MGM brings Lassie to life in this 1943 motion picture, based on the similarly titled 1940 novel by Eric Knight.
The UK passes the first animal welfare laws
Dogs appear in Renaissance paintings as friends and companions
This reflects the earliest date where wolves have evolved into domesticated dogs.
