An investigation has been launched after an abandoned pony was found crawling with maggots and flies as it “stumbled down the road”. The young male, named Forrest, was secured by police in Park Corner Road, Southfleet, in the early hours of Sunday morning following reports from members of the public. Officers managed to catch the sick and injured animal using a dog lead. RSPCA inspector Kirsten Ormerod, who has launched the investigation, said: “Neighbours reported hearing vehicles at about 5am before finding the neglected pony abandoned and very confused. “He was wobbly on his legs, really le…