Dog owners are being urged to keep their pets under control following a rise in attacks on sheep across the county. Fourth-generation farmer John Dinnis, who runs a mixed farm near Sevenoaks, has lost more than 20 sheep to dog attacks over the years. He said: “Sadly the situation has been getting worse. “There was a big rise in dog ownership in lockdown and many people do not understand what can happen in the countryside when they do not have control of their dogs. “It does have a financial impact on the business but the animal welfare issue is the main concern. “It is really awful to see the …