Sara the pooch loves nothing better than to spend her days on the swings at her local park. In one of the weirdest behaviours witnessed in the canine world, the Labdrador-Chihuahua cross even goes berserk with excitement when her loving owners just mention the word "swing" to her. She even prefers it to going for a walk. While most would expect a dog's favourite activity to be chasing rabbits or sniffing around woods, happy Sara almost seems to smile as she contentedly rocks back and forth, over and over again. (Footage by Barcroft Media/Getty Images)