Dog owners are being warned to keep their pets on leads after lambs were brutally savaged.
Seven lambs were attacked by dogs in fields in Heath Charnock and White Coppice, near Chorley.
In one incident, a lady had eight dogs off the lead and she was walking them through a field of pregnant ewes and ewes with lambs at foot.Helen Drinkall
Five of the lambs had to be killed due to the severity of their injuries and two others are being treated for severe injuries.
The latest attacks, which happened on May 16 and 17, follow another incident last month in which two lambs were savaged by a dog in Rivington.
Chorley Police is investigating the incident and officers are calling on dog owners to keep their pets on leads.
Helen Drinkall, who rents a farm from landowners United Utilities in Anglezarke, said: “We have had a lot of problems with people walking their dogs off the leads over lambing season.
“In one incident, a lady had eight dogs off the lead and she was walking them through a field of pregnant ewes and ewes with lambs at foot.
“When she was asked to put the dogs on a lead, she refused and she was extremely rude, claiming her dogs wouldn’t hurt them.
“This is besides the point, although the dogs may not have been physically chasing the sheep, they were still forcing them to run away, and stressing them out.
“People need to be wary of what their dogs can potentially do. We are sending a warning to dog owners to be aware, we also would like any information from the incidents in White Coppice and Heath Charnock.”
Under the Dogs (Protection of Livestock) Act 1953, it is a criminal offence to have a dog off its lead and allowing it to worry livestock on agricultural land.
A spokesman for Chorley Police said: “We urge all dog owners to keep their pets on leads around livestock. It is a criminal offence to allow pets to worry livestock. Owners may think their dogs are trained but when instinct kicks in, there is no stopping them.”
A spokesman from United Utilities said: “We have signs up during lambing season to remind owners to keep their dogs under close supervision.”