Overweight Tilly the 10 year old German Shepherd/Border Collie, who at 39.1kg weighs the same as 20 Chihuahuas, and needs to lose half her body weight. Tilly arrived at Battersea after her owner passed away, and had sadly been unable to walk her. She is on a weight management programme, but like Aimee, she prefers human food, and often refuses to eat weight-loss dog food.