Officers investigating an attack on sheep near Bridport are appealing for anyone with information to come forward.
Dorset Police received a report at around 10am on Monday 27 August that a dog was seen chasing sheep round fields off Dottery Road just north of the town.
It was reported that the dog cornered a five-month-old lamb and attacked it, causing serious injuries.
The dog is described as a medium-sized crossbreed with a bulldog type head, mainly white in colour with ginger patches.
Police Constable Alison Gale, of Bridport police, said: “Sadly as a result of the injuries it sustained in the attack, the lamb had to be put down.
“We have been carrying out a number of enquiries to identify the owner of this dog and I am appealing for anyone with information that can assist our investigation to contact us.
“We would always encourage dog owners to keep their pets on leads when near livestock to avoid incidents such as this, which can cause considerable upset and inconvenience to local farmers.”
Anyone with information is asked to contact Dorset Police at www.dorset.police.uk, via email email@example.com or by calling 101, quoting occurrence number 55180138494. Alternatively, contact Crimestoppers anonymously on 0800 555 111 or via www.crimestoppers-uk.org.