Deputy Police and Crime Commissioner Ellie Vesey-Thompson has urged dog-owners to keep their pets on a lead after lambs were attacked in a Dorking field.
Ellie joined officers from Surrey Police's Rural Crime Team at a farm last month, where she learned of a recent attack on sheep.
One of the lambs suffered serious facial injuries, including the loss of a top lip.
The same farmer has previously lost almost 30 sheep in a dog attack.
Livestock worrying, an offence in the UK, includes barking, chasing, biting and killing.
The crime causes huge distress and financial loss in the farming community.