For some Australians, a day at the races is a tradition, a national pastime for people to have a punt and watch their favourite horse race along the track in hope of that big win. But behind the celebratory air, is a dark side riddled with animal welfare issues.From the oversupply of racehorses, questionable training techniques, the use of whips and the physical toll racing takes on the horses involved, it's an industry that is in urgent need of improvement.The animal welfare science and...