Volunteers have formed a search party to look for a dog which ran off when it was being delivered to a foster carer in Sheffield.
Tyson, a labrador cross, was sent to Sheffield from Crete by an animal charity which re-homes street dogs from the island.
Cretan Animal Protection has volunteers in Sheffield who offer foster care until permanent homes can be found for the animals.
Tyson has just arrived at a house on Luna Croft, Charnock, when he escaped after jumping over a 7ft gate.
He has been missing since Wednesday, November 23.
A Facebook page has been set up, with possible sightings of the dog posted there and followed up by volunteers, who are trying to map his movements.
Volunteer Keeley Marples said: "We are trying to map all the possible sightings to try to work out his movements.
"It has been two weeks now and it is turning very cold, so we are all worried."
Visit the Help Find Tyson p[age on Facebook or call Keeley on 07730 483264 or Christina Hespe on 07740 367050.