A 69-year-old was left fighting for his life after an XL Bully launched an attack on him while he was taking an evening walk. Resham Singh suffered injuries to his arms, legs, shoulder and upper thigh after being mauled by the animal in Lingfield Road, Gravesend. He was taking a walk on Tuesday evening when the dog came up from behind and started biting him all over his body. It then dragged him across the road in his flip-flops, leaving behind a pool of blood. The father-of-three is still in hospital and may need reconstructive surgery. His son, Raj Dhanda, said: “My dad managed to stop him f…