Dog owners are being asked to keep their pets in check over the coming weeks as lambing season gets underway. With Easter expected to trigger an increase in visitors to the countryside, walkers with dogs in tow are being reminded of the rules amid fears attacks on livestock will increase. The scale of livestock worrying Across the UK, the estimated cost of livestock worrying soared by nearly 30% to £2.4 million last year. However at the same time, NFU Mutual claims its recent survey of 1,100 dog owners found more people were letting their pets off leads in the countryside last year than in 202…