Two pregnant ewes sustained severe wounds to their heads after being attacked in a field on Glebe Road, Bowness on Windermere.
Police believe the attacks have been by dogs who have been off leads, unattended and allowed to chase sheep in fields.
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It is now believed that 45-year-old Robert Cantle may have travelled in his car to the Jedburgh area on Sunday morning.
A Cumbrian man has been jailed for 15 years after a police crime unit seized its biggest ever haul of firearms.
The historic event always takes place on the last Friday in July.