Nine lambs and two pregnant ewes have died after a suspected dog attack in Aberdeenshire.
The incident in a field near Cornhill, Banff, is believed to have happened between 09:30 and 14:30 on Friday.
Police said nine lambs were killed and two pregnant sheep later died.
Sgt Morag Clark said: "I would urge anyone who was in the area, including all dog owners and those exercising dogs, to come forward with information regarding this tragic incident."
She added: "Eleven animals have died and there's no doubt any dog responsible would have had blood around its mouth or on its coat.
"It is in every dog's instinct to chase, even if they are usually obedient and good with other animals.
"It's important we all recognise the devastating consequences of a dog attacking, chasing or even being at large in a field where sheep are kept.
"When enjoying the countryside, especially if there's sheep or lambs around, dogs are recommended to be kept on a lead or at the very minimum, under close control."